Dating Fossils : Relative Dating and Absolute Dating

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DATING FOSSILS

Knowing the age of a fossil can help a scientist establish its position in the geologic time scale and find its relationship with the other fossils.

Fossils, Fossil Types and Fosilization

There are two ways to measure the age of a fossil: relative dating and absolute dating.

1. RELATIVE DATING
I. Based upon the study of layer of rocks
II. Does not tell the exact age: only compare fossils as older or younger, depends on position in rock layer
III. Fossils in the uppermost rock layer/ strata are younger while those in lowermost deposition are oldest


How Relative Age is Determined

I. Law of Superposition: if a layer of rock is undisturbed, the fossils found on upper layers are younger than those found in lower layers of rocks
II. However, because the Earth is active, rocks move and may disturb the layer making this process not highly accurate

Rules of Relative Dating

A. LAW OF SUPERPOSITION:
Sedimentary layers are deposited in a specific time- youngest rocks on top, oldest rocks at the bottom


B. LAW OF ORIGINAL HORIZONTALITY: Deposition of rocks happen horizontally- tilting, folding or breaking happened recently



C. LAW OF CROSS-CUTTING RELATIONSHIPS: If an igneous intrusion or a fault cuts through existing rocks, the intrusion/fault is YOUNGER than the rock it cuts through



INDEX FOSSILS (guide fossils/ indicator fossils/ zone fossils): fossils from short-lived organisms that lived in many places; used to define and identify geologic periods

2. ABSOLUTE DATING
• Determines the actual age of the fossil
• Through radiometric dating, using radioactive isotopes carbon-14 and potassium-40
• Considers the half-life or the time it takes for half of the atoms of the radioactive element to decay
• The decay products of radioactive isotopes are stable atoms.


Carbon-14 Dating:

A living organism has carbon-14.
For the amount of Carbon in the organism’s body to become half, it will take about 5,700 years; which is the half-life of carbon-14.

Take a look at the table below. Then answer the exercise below.

Read the post on Carbon Dating : Measurement and Accuracy for more facts and information on Carbon Dating.

Exercise Questions :


A.) Fill up the remaining data in the table.

4 , Mass Remaining : _____________ ,  Number of Years : __________
5 , Mass Remaining : _____________ ,  Number of Years : __________
6 , Mass Remaining : _____________ ,  Number of Years : __________

B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?

C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.

198 comments:

  1. JHON FHEL U. DURAN 12-SAMARIA
    EXERCISES (ANSWER)
    A). 4).Mass remaining:1/16
    Number of Years:22,800
    5).Mass remaining:1/32
    Number of Years:28,500
    6).Mass remaining:1/64
    Number of Years:34,200

    B). According to what i have searched, there are few categories of artifacts that can be dated using Carbon 14 and also it can only measure up to 50,000 years old only.

    C). For me YES, because scientists have tested and proved this method of determining fossils age. I think it would be better if other scientists discover more methods so there is no limitation in determining fossil ages.

    ReplyDelete
  2. A.
    4. Mass Remaining: 1/16; Years: 22,800
    5. Mass Remaining: 1/32; Years: 28,500
    6. Mass Remaining: 1/64; Years: 34,200

    B.
    C-14 has a half life of only ~5700 years. Fossils older than 50,000 years don't have enough C-14 left to make a good measurement. In such cases scientists use isotopes with longer half lifes such as Argon-40, which has a half life of 1.3 billion years. (Source: http://www.biology.arizona.edu/biomath/tutorials/Applications/Carbon.html) At the same time Carbon-14 can't be used to measure things newer than the 1950s, as the use nuclear weapons of had dramatically increased the amount of C-14 in the atmosphere by that point.

    C.
    Yes, especially when used properly. Today dendrochonology (tree-ring dating) is used to calibrate (convert radiocarbon time to calendar time) radiocarbon dates and account for the historical inconsistency in C-14/C-12 ratios. The technology and accuracy of the method has developed greatly over the years and continues to do so.
    (read: https://phys.org/news/2017-04-radiocarbon-dating-postmodern-makeover.html)

    ReplyDelete
  3. Jackielou B. Bohol
    A.
    4, Mass Remaining:1/16, Number of Years:22,800
    5, Mass Remaining:1/32, Number of Years:28,500
    6, Mass Remaining:1/64, Number of Years:34,200
    B. The short half-life of carbon-14 means it cannot be used to date fossils that are allegedly extremely old.
    C. No, because Carbon Dating has its limits. Carbon dating cannot be used on artifacts over about 50,000 years old.

    ReplyDelete
  4. Kyle Russel N. Santos
    A. 4, Mass Remaining:1/16, Number of Years:22,800
    5, Mass Remaining:1/32, Number of Years:28,500
    6, Mass Remaining:1/64, Number of Years:34,200
    B. The short half-life of carbon-14 means it cannot be used to date fossils that are allegedly extremely old.
    C. No, because Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.

    ReplyDelete
  5. David Roniel Sumande RefuerzoJanuary 29, 2018 at 8:43 PM

    A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/64 , Number of Years : 34200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    The limit to measuring using carbon-14 is that for extremely old organisms, say millions of years old, it would not be that reliable anymore due to the intensely small amounts of Carbon 14. The limit is when all of it has decayed, making old organism fossils unreliably traced by using carbon dating.
    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    I believe that carbon dating would be reliable in cases for which the organism is not older than 50,000 years old, by the time that the organism would be difficult to read in carbon dating, via the small amounts of carbon. But, given that the fossil still contains ample amounts of C-14, it could be reliable if the fossil were a little younger.

    ReplyDelete
  6. A.)
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) The limit in using carbon-14 in determining a fossil's age is that it is hard to identify how much carbon would have been present originally.

    c.) Yes, because there are researches about it and scientist already used this method to determine the age of a fossils. Also all living organism have absorb carbon, once an organism dies it stop absorbing carbon so the carbon dating can be used to determine its age.

    ReplyDelete
  7. A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/64 , Number of Years : 34200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?

    Answer: The original amount of carbon present is hard to determine which makes it not 100% reliable

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.

    Answer: Carbon dating is not always accurate because equilibrium changes overtime which creates a limitation for accurate determining of age

    ReplyDelete
  8. WILLIAM PAUL MANALO
    GRADE 12 - SINAI
    A. YES
    B. YES
    C. Recessive
    D.
    i. Homozygous female (not affected)
    ii.Homozygous male (not affected)
    iii.Homozygous female (not affected)
    iv.Homozygous female (affected)
    v. Homozygous male (not affected)
    E. 25%


    http://bit.ly/2ropFJH
    WILLIAM PAUL MANALO
    GRADE 12 - SINAI
    A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age? 100,000 years

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    No, well of course though our technolog has the enhanced way of proving its result still the information that it can be provided
    can't be that accurate.

    ReplyDelete
  9. Jan Andrei C. Zamora STEM-Sinai
    A.
    4.1/16,23,800
    5.1/32,29,500
    6.1/64,36,200
    B.
    answer: the interaction of cosmic ray with atmospheric nitorgen
    C.
    Answer:their are many other method to detemine the age of dead organisms so i think that carbon dating is also accurate method to determined the dead organism age..

    ReplyDelete
  10. A.
    4.1/16 22,800
    5.1/32 28,500
    6.1/64 34,200
    B.
    c.i think yes its accurate.

    ReplyDelete
  11. A. 4, Mass Remaining: 1/16 Number of Years: 22800
    5, Mass Remaining: 1/32 Number of Years: 28500
    6, Mass Remaining: 1/64 Number of Years: 34200
    B. 50,000 years
    C. Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things. There are a few categories of artifacts that can be dated using carbon-14; however, they cannot be more 50,000 years old. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air. This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock. The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating. This restriction extends to animals that consume seafood in their diet.

    ReplyDelete
  12. 1/16 22800,1/32 28500,1/64 34200
    5700
    Yes because most amount of organism is in the carbon

    ReplyDelete
  13. Reynaldo Ponce
    A.
    4. 1/16 -34,200
    5. 1/32 -68,400
    6. 1/64 -136,800
    B. Carbon-14 dating can determine the age of an artifact that is up to 40,000 years old.
    C. No, for it cannot accurately determine fossils from over about 50,000 years old

    ReplyDelete
  14. 4, mass Remaining:50, number of years: 22,800
    5, mass Remaining:25, number of years:28,500
    6, Mass reamining:15, number of years:35,200

    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things.

    Nuclear tests, nuclear reactors and the use of nuclear weapons have also changed the composition of radioisotopes in the air over the last few decades. This human nuclear activity will make precise dating of fossils from our lifetime very difficult due to contamination of the normal radioisotope composition of the earth with addition artificially produced radioactive atoms.

    ReplyDelete
  15. answers :
    A.)
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) It has limitation when it comes to the years of a fossil which was buried. It can only detect fossils were buried about 50 years ago.

    C.) It is, specially to the fossils aged about 50 yrs ago. It can be still use although it has limitation. Not all the fossils aged more than 50 years ago.

    ReplyDelete
  16. 4. Mass Remaining: 1/10 Number of Years: 22,800
    5. Mass Remaining: 1/12 Number of Years: 28,500
    6. Mass Remaining: 1/14 Number of Years: 34,200
    STEM SHILOH EVANGELISTA JAKE CONRAD :)

    ReplyDelete
  17. A)
    4) 1/16 , 22800
    5) 1/32 , 28500
    6) 1/64 , 34200
    B) when the carbon in the organism's body is too small.
    C) No , because it needs to take exactly 5,700 years to identify if he decay half of its carbon in the organism's body.

    ReplyDelete
  18. Serrando Roman Jr.
    STEM-Shiloh
    A.
    4.) Mass Remaining: 1/16 , Number of Years :22,800
    5.) Mass Remaining: 1/32 , Number of Years :28,500
    6.) Mass Remaining: 1/64 , Number of Years :34,200
    B. The fossil's age itself. Fossils that have gone through many Carbon-14 half lives, means very old, are very difficult to detect. It is difficult to measure and compare after about 50,000 years (between 8 and 9 half lives).
    C. Yes, because it is based on scientific calculations. Even though that sometimes scientist may say that it will slightly agree with other method of age estimation, the fact that it works, it is still is.

    ReplyDelete
  19. A.)
    4. 1/16 grams, 22,800 years
    5. 1/32 grams, 28,500 years
    6. 1/64 grams, 34,200 years

    B.) When the mass is given in decimal.
    C.) Yes, because it is well calibrated.

    ReplyDelete
  20. DANIELLA MAE BABOL


    4. MASS REMAINING: 1/16
    NUMBER OF YEARS: 22,800
    5. MASS REMAINING: 1/32
    NUMBER OF YEARS: 28,500
    6. MASS REMAINING: 1/64
    NUMBER OF YEARS: 34,200

    ReplyDelete
  21. JULIA MARIE JASPE

    4. MASS REMAINING: 1/16
    NUMBER OF YEARS: 22,800
    5. MASS REMAINING: 1/32
    NUMBER OF YEARS: 28,500
    6. MASS REMAINING: 1/64
    NUMBER OF YEARS: 34,200

    ReplyDelete
  22. Miguel Angelo T. TomimbangFebruary 11, 2018 at 11:15 AM

    A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B. 50,000 years old
    C.Yes, because we are able to determine what the ratio was in the unobservable past and carbon dating is accurate for only a few thousand years than the other dating.

    ReplyDelete
  23. A.) 4. 1/16, 22800
    5. 1/32, 28500
    6. 1/64, 34200
    B.)If the sample died more than 50,000 years ago, it would have no measurable C14 left today. Thus, the analysis technique cannot differentiate between samples which are 50 millennia or 100 millennia BP.
    C.)Yes because ot determines the approximate date of death for that sample. but there's a limit in to it on the time it can only be measure.

    ReplyDelete
  24. Mark Rainelle Limaco
    Smyrna
    A.)
    4.1/16, 22800
    5.1/32, 28500
    6.1/64, 34200
    B.)If the sample died more than 50,000 years ago, it would have no measurable C14 left today. Thus, the analysis technique cannot differentiate between samples which are 50 millennia or 100 millennia BP.
    C.)Yes because it determines the approximate date of death for that sample but there are limitations to it like the time it can only be determine by the Carbon Dating.

    ReplyDelete
  25. A.
    4. 1/16, 22800
    5. 1/32, 28500
    6. 1/64, 34200

    B. 50,000 years
    C. Carbon dating is somewhat accurate because scientist are able to determine the age of an old fossil although it has a limit of determining a fossil's age.

    ReplyDelete
  26. ANSWERS:

    A. Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B. 50,000 years

    C. No, since we are able to determine what the ratio was in the un-observable past and carbon dating is precise for just a few thousand years.

    ReplyDelete
  27. Kyla Mae Samson (Smyrna)February 12, 2018 at 10:28 PM

    ANSWERS:

    A. Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B. 50,000 years

    C. No, since we are able to determine what the ratio was in the un-observable past and carbon dating is precise for just a few thousand years.

    ReplyDelete
  28. Kyla Mae Samson (Smyrna)February 12, 2018 at 10:28 PM

    ANSWERS:

    A. Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B. 50,000 years

    C. No, since we are able to determine what the ratio was in the un-observable past and carbon dating is precise for just a few thousand years.

    ReplyDelete
  29. A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. No, because we just able to determine what is the ratio was in the unobservable past and carbon dating is accurate for only thousand years.

    ReplyDelete
  30. A.)
    4, Mass Remaining: 1/16 , No. Of years : 22,800
    5, Mass Remaining: 1/32, No. Of years: 28,500
    6, Mass Remaining: 1/64, No. Of years: 34,200

    B. ) Carbon-14 cannot be used to date fossils that are allegedly extremely old( like those dinosaurs alleged to be millions of years old)

    C.)
    No, because carbon-14 has a half-life of 5700 years, after an organism has been dead 70000 years, so little carbon-14 is left that accurate dating cannot be established.

    ReplyDelete
  31. A.)
    4 , Mass Remaining : 1/16 Number of Years : 22800
    5 , Mass Remaining : 1/32 Number of Years : 28500
    6 , Mass Remaining : 1/64 Number of Years : 34200
    B.) It cannot be used to date fossils that are allegedly extremely old example of this are the dinosaurs, the evolution alleges lived millions of years ago.
    C.) For me carbon dating is not an accurate method in determining the age of dead organism because first is that carbon is not only the chemicals that is found in body of an organism and next is that carbon 14 is limited in years span

    ReplyDelete
  32. A.)
    4,1/16,22800
    5,1/32,28500
    6,1/64,34200
    B.)
    The half life of carbon-14 is approximately 5,730 years which means it cannot be used on older fossils like dinosaurs that is allegedly million years ago.
    C.)
    It is for specimens which only date back few thousand years ago but knowing it's limitation going beyond thousand years can be a little bit doubtful.

    ReplyDelete
  33. 4. 1/16 grams 22,800 years
    5. 1/32 grams 28,500 years
    6. 1/64 grams 34,200 years
    B. Up to 50,000 years.
    C. I think half yes, because scientist attempt to check the accuracy of carbon dating by comparing it to other methods,but scientist also says that it has not been constant over the years . And carbon dating cannot be used kn most fossils,not only because they are almost too old,but also they rarely contain the original carbon of the organism that has been fossilized.

    ReplyDelete
  34. Ellaine Ann Ponting
    G.12 STEM Shunem

    A.) Fill up the remaining data in the table.
    4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/34 , Number of Years : 34200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    It cannot be used to date fossils that are allegedly extremely old, e.g. dinosaurs the evolution alleges lived millions of years ago. Levels of carbon-14 become difficult to measure and compare after about 50,000 years (between 8 and 9 half lives; where 1% of the original carbon-14 would remain undecayed).

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms?
    No, because Carbon dating cannot be used on most fossils, not only because they are almost always allegedly too old, but also because they rarely contain the original carbon of the organism that has been fossilized. Also, many fossils are contaminated with carbon from the environment during collection or preservation procedures.

    ReplyDelete
  35. A.
    4. 1/16, 22800 years
    5. 1/32 28500 years
    6. 1/64 34200 years

    B.The believed amount of carbon inside a fossil is just an estimated amount, it does not tell the original amount of the carbon that were there.

    C.Sometimes because the measured age of the fossil with the help of this method is close to the measured age when scientists use other methods of dating a fossil.

    Kyle Erjo Dela Cruz
    STEM-Samaria

    ReplyDelete
  36. A.
    4 , Mass Remaining : 1/16, Number of Years :22,800
    5 , Mass Remaining : , 1/32 Number of Years : 28,500
    6 , Mass Remaining : , 1/64 Number of Years : 43,200
    B.5,700
    C. I think that Carbon Dating is not that accurate unlike other methods of determining the age of dead organisms; it's subject to errors and has its own limitations such as the age it can correctly determine and its also prone to contamination. But i also think that Carbon Dating is quite easy to use and it still gets the job done regardless of its drawbacks.

    ReplyDelete
  37. Lizette S. Doroteo XII-SHUNEMFebruary 17, 2018 at 5:46 PM

    A.
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B. 5,700 yrs.
    C. yes, because many other carbonates may be dated using this technique.

    ReplyDelete
  38. 4. 1/16, 22800
    5. 1/32, 28500
    6. 1/64, 34200

    B. it cannot be used to date fossils that are extremely old
    C. No, because it just determining the age near of its real age.

    ReplyDelete
  39. A.
    4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/64 , Number of Years : 34200

    B. For the amount of Carbon in the organism’s body to become half, it will take about 5,700 years; which is the half-life of carbon-14.

    C. yes.Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old)

    ReplyDelete
  40. A.
    4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/64 , Number of Years : 34200

    B. For the amount of Carbon in the organism’s body to become half, it will take about 5,700 years; which is the half-life of carbon-14.

    C. yes.Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old)

    ReplyDelete
  41. John Ferdinand E. Chavez
    Gr. 12 Shunem
    answer:
    a) 4. 1/16, 22800
    5. 1/32, 28500
    6. 1/64, 34200
    b) Considers the half-life or the time it takes for half of the atoms of the radioactive element to decay
    c) yes, because of this kind of method, some of the age of the dead organisms will begin to study.

    ReplyDelete
  42. A.)
    4 . Mass : 1/16 years : 22800
    5 . Mass : 1/32 years : 28500
    6 . Mass : 1/64 years : 34200

    B.) Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.

    C.) If it is in the range of 0- 50,000 years, I would say yes . My other answer is not simple. There are a few categories of artifacts and dead organisms that can be dated using carbon-14; however, they cannot be more 50,000 years old. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.

    ReplyDelete
  43. ANGELICA MAE P. MAGPANTAY
    STEM SMYRNA

    A.)
    4.Mass Remaining: 1/16 , Number of years: 22,800
    5.Mass Remaining: 1/32 , Number of years: 28,500
    6.Mass Remaining: 1/64 , Number of years: 34,200

    B.)
    Carbon-14 can be determine up to 50,000 years old or 8to 9 lives.

    C.)
    Yes, since Carbon dating can determine the age of the rocks it can also use to examine the age of plants,wood, and also dead organisms

    ReplyDelete
  44. ANGELICA MAE P. MAGPANTAY
    STEM SMYRNA

    A.)
    4.Mass Remaining: 1/16 , Number of years: 22,800
    5.Mass Remaining: 1/32 , Number of years: 28,500
    6.Mass Remaining: 1/64 , Number of years: 34,200

    B.)
    Carbon-14 can be determine up to 50,000 years old or 8to 9 lives.

    C.)
    Yes, since Carbon dating can determine the age of the rocks it can also use to examine the age of plants,wood, and also dead organisms

    ReplyDelete
  45. ANGELICA MAE P. MAGPANTAY
    STEM SMYRNA

    A.)
    4.Mass Remaining: 1/16 , Number of years: 22,800
    5.Mass Remaining: 1/32 , Number of years: 28,500
    6.Mass Remaining: 1/64 , Number of years: 34,200

    B.)
    Carbon-14 can be determine up to 50,000 years old or 8to 9 lives.

    C.)
    Yes, since Carbon dating can determine the age of the rocks it can also use to examine the age of plants,wood, and also dead organisms

    ReplyDelete
  46. ANGELICA MAE P. MAGPANTAY
    STEM SMYRNA

    A.)
    4.Mass Remaining: 1/16 , Number of years: 22,800
    5.Mass Remaining: 1/32 , Number of years: 28,500
    6.Mass Remaining: 1/64 , Number of years: 34,200

    B.)
    Carbon-14 can be determine up to 50,000 years old or 8to 9 lives.

    C.)
    Yes, since Carbon dating can determine the age of the rocks it can also use to examine the age of plants,wood, and also dead organisms

    ReplyDelete
  47. ANGELICA MAE P. MAGPANTAY
    STEM SMYRNA

    A.)
    4.Mass Remaining: 1/16 , Number of years: 22,800
    5.Mass Remaining: 1/32 , Number of years: 28,500
    6.Mass Remaining: 1/64 , Number of years: 34,200

    B.)
    Carbon-14 can be determine up to 50,000 years old or 8to 9 lives.

    C.)
    Yes, since Carbon dating can determine the age of the rocks it can also use to examine the age of plants,wood, and also dead organisms

    ReplyDelete
  48. Aaron john II M. Luzon
    XII - SALEM
    A.
    4. 1/16 - 22800
    5. 1/32 - 28500
    6. 1/64 - 34200
    B.
    the limit in using carbon-14 as a measure to determine a fossil’s age is up to 50000 yrs old
    C.
    I think radio carbon dating is an accurate method of determining the correct age of dead organisms because it shows formula that can stand a evidence or proof on stating the correct age of a dead organism

    ReplyDelete
  49. Lenie Anne L. Perez (Salem)

    A.
    4. Mass Remaining: 1/16 Number of Years: 22.800
    5. Mass Remaining: 1/32 Number of Years: 28,500
    6. Mass Remaining: 1/64 Number of Years: 34,200

    B. Carbon-14's limit in measurement to determining a fossil's age is 40,000 years since there is only 1% of the original C-14 left.

    C. Yes, Carbon Dating is accurate for measuring a fossil's age, but only when it's within the limit of C-14. If the fossil is above the limit, it becomes harder to measure the age accurately.

    ReplyDelete
  50. Rajen Hanwel T. Maglaque
    12-Salem

    4.Mass Remaining:1/16
    Number of years:22,800
    5.Mass Remaining:1/32
    Number of years:28,500
    6.Mass Remaining:1/64
    Number of years:34,200

    ReplyDelete
  51. SARMIENTO, RIZZA MARIE E.February 18, 2018 at 11:39 AM

    (LOA) STEM - SHUNEM

    A. 4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/18, Number of Years : 28500
    6 , Mass Remaining : 1/24 , Number of Years : 34200

    B. i think there's no limit of using carbon-14 because all the living organism has carbon-14.

    C. Yes, Because Radiocarbon dating involves determining the age of an ancient 29 mar 2010 if you have a fossil, can tell how old it is by carbon 14 method. It is radioactive, so after 5,730 years half of an original sample will have 21 october2015 due to radioactive decay it used as a tool date the fossils. scientists use carbon when determining the of fossils that are less than 60,000 years old, composed organic materials such as wood most important relative dating, in which layers rock radiometric allows actual ages certain types to could be analyzed chemically determine ages, years, those rocks a compares ratio 12 14 atoms organism, it is possible formerly living thing fairly precisely. Determining the age of a fossil using carbon 14 youtube. Carbon 14, radiometric dating csi creation studies institute. Sometimes, it is radiometric (or radioactive) dating. Geologists use radiometric dating to estimate how long ago rocks formed, and infer the ages of fossils contained within those 30 sep 2014 there are two basic approaches relative geologic age dating, absolute.

    ReplyDelete
  52. VALDEZCO, NATHAN JAMES L.February 18, 2018 at 11:40 AM

    (LOA) STEM - Sinai

    A. 4 , Mass Remaining : 1/16 , Number of Years : 22800
    5 , Mass Remaining : 1/18, Number of Years : 28500
    6 , Mass Remaining : 1/24 , Number of Years : 34200

    B. i think there's no limit of using carbon-14 because all the living organism has carbon-14.

    C. Yes, Because Determining the age of a fossil using carbon 14 youtube. Carbon 14, radiometric dating csi creation studies institute. Sometimes, it is radiometric (or radioactive) dating. Geologists use radiometric dating to estimate how long ago rocks formed, and infer the ages of fossils contained within those 30 sep 2014 there are two basic approaches relative geologic age dating, absolute.

    ReplyDelete
  53. A.)
    1/16, 22 800 years
    1/32, 28 500
    1/64, 34 200
    B.) Carbon-14 cannot be used to date fossils that are extremely old.
    C.) Yes but there's a limit when using carbon dating. For example,Because the half-life of carbon-14 is 5,700 years, it is only reliable for dating objects up to about 60,000 years old. The use of isotopes allows the dating of biological and geological samples with a high degree of accuracy. However,isotope dating may not work so well in the future. Anything that dies after the 1940s, when Nuclear bombs, nuclear reactors and open-air nuclear tests started changing things, will be harder to date precisely.

    ReplyDelete
  54. A.
    4. 1/16 ; 22,800
    5. 1/32 ; 28,500
    6. 1/64 ; 34,200

    B.Does not tell the exact age: only compare fossils as older or younger.

    C. No. Because there's a limitation. The older the object, the less carbon-14 there's to measure. Therefore limited to objects that are younger than 50,000 to 60,000 years or so

    ReplyDelete
  55. A.
    4: Mass Remaining : 1/16 , Number of years : 22,800
    5: Mass Remaining : 1/32 , Number of years : 28,500
    6: Mass Remaining : 1/64 , Number of years : 34,200

    B.
    Carbon-14's limitation in measuring a fossil's age is when the fossil is over 50,000 years old.

    C.
    Yes, Carbon dating is the best and most accurate method to determine the exact age of a fossil. It is because when you compare this to other methods, this was the most scientifically proven and has lots of strong evidence to show that it is true. Although it has limitations, at least it has the most accurate because truly there are carbon in a once alive organisms and that will decay as years pass by.

    Ronald Christian Andal
    STEM-Salem

    ReplyDelete
  56. Narvaez Rone Jerome
    12- Shunem
    A.
    4. 1/16, 22,800
    5. 1/24, 28,500
    6. 1/32, 34,200

    B.It cannot be used to date fossils that are allegedly extremely old.

    C.No. Because extremely old fossils it has expiration to analyze the age of an fossil

    ReplyDelete
  57. A 1 1/16 22800 yrs
    2. 1/32 28500
    3. 1/64 34200
    B. The limit is the mass remaining of the fossils because it is not infinite.
    C. Yes because it shows numerical data or computation in getting the remaining mass or years passed

    ReplyDelete
  58. A.
    1/16 22800
    1/32 28500
    1/64 34200
    B.
    this technique will not work on older fossils like those of the dinosaurs alleged to be millions of years old
    C.
    NO, because it can only be used on carbon-containing things that were once alive. The method of calculating radiometric dates is like using an hourglass. You can use the hourglass to tell time if you know several things: the amount of sand in the top of the hourglass when it started flowing, the rate that the sand flows through the hole in the middle, and that the quantity of sand in each chamber has not been tampered with. If any of these three conditions is not accurately known, the hourglass will give an inaccurate measure of time.

    Angelo Leon M. Aurelio
    Shechem

    ReplyDelete
  59. A.) Fill up the remaining data in the table.

    4 , Mass Remaining : _______1/16______ , Number of Years : _____22800_____
    5 , Mass Remaining : __________1/32___ , Number of Years : ____28500______
    6 , Mass Remaining : ________1/64_____ , Number of Years : ______34200____

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    The limit of Carbon 14 is that, this technique is not restricted to bones; it can be used on cloth, wood and plant fibers and also the half-life of carbon-14 is approximately 5,730 years. The short half-life of carbon-14 means it cannot be used to date fossils that are allegedly extremely old.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    It depends on how long the organism have died. As Carbon dating cannot used to date fossils that are old enough. e.g. dinosaurs the evolution alleges lived millions of years ago. Levels of carbon-14 become difficult to measure and compare after about 50,000 years which is between 8 and 9 half lives; where only 1% of the original carbon-14 would remain undecayed.

    ReplyDelete
  60. a. 4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200
    b. 5,700
    c. yes, because the it has a formula of determining the age of the dead organism.

    ReplyDelete
  61. Claire Angelie R. Sison
    12 - Salem

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) 1/64

    C.) No, because it is limited to dating things that contain carbon and were once alive.

    ReplyDelete
  62. A.)
    4. Mass remaining: 1/16, number of years: 22800
    5. Mass remaining: 1/32, number of years: 28500
    6. Mass remaining: 1/64, number of years: 34200

    B.) The half-life of carbon-14 is approximately 5,730 years. This means C-14 cannot be used if there is an extremely old fossil to be dated.

    C.) It is accurate for specimens that are few thousand years old but for specimens that are extremely old it isn't.

    ReplyDelete
  63. A
    4 1/16, 22800
    5 1/32, 28500
    6 1/64, 34200
    B i think there is no limit but tha amount become smaller and smaller
    C yes, it can be the most accurate in determining the age because it can determine the age of the fossil based in the amount of carbon left.

    ReplyDelete
  64. Gwen Camille Pico (SHUNEM)February 18, 2018 at 8:32 PM

    A.)4 , Mass Remaining : 1/16, Number of Years : 22800
    5 , Mass Remaining : 1/32 , Number of Years : 28500
    6 , Mass Remaining : 1/64 , Number of Years : 34200
    B.) 5,700
    C.) No, because it's just an estimate on how old the organisms can be.

    ReplyDelete
  65. A)
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    One of the limits of using carbon-14 to measure fossil's age is that it cannot be used on artifacts over about 50,000 years old. The fossils have gone through a lot of carbon-14 half lives that it may cause damage and leads to difficulty in detecting its age.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    In my opinion, Carbon Dating has been a known method of determining a fossil's age. Many scientists used this and some said that it is really a reliable method. But with some limitations it could be less useful. From what I've read, sometimes carbon dating will agree with other evolutionary methods of age estimation and other times the results are slightly different from the estimated age of the fossil.

    ReplyDelete
  66. A)
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    One of the limits of using carbon-14 to measure fossil's age is that it cannot be used on artifacts over about 50,000 years old. The fossils have gone through a lot of carbon-14 half lives that it may cause damage and leads to difficulty in detecting its age.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    In my opinion, Carbon Dating has been a known method of determining a fossil's age. Many scientists used this and some said that it is really a reliable method. But with some limitations it could be less useful. From what I've read, sometimes carbon dating will agree with other evolutionary methods of age estimation and other times the results are slightly different from the estimated age of the fossil.

    ReplyDelete
  67. A.4.) 1/16,22,800 yrs
    5.) 1/32,28,500 yrs
    6.) 1/64,34,200 yrs
    B. 34,200 yrs
    C. Yes

    ReplyDelete
  68. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Maricar R. Lopena
    STEM12 SHECHEM

    ReplyDelete
  69. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Maricar R. Lopena
    STEM12 SHECHEM

    ReplyDelete
  70. Irish Mogar AdoptanteFebruary 18, 2018 at 9:11 PM

    At its most basic level, carbon dating is the method of determining the age of organic material by measuring the levels of carbon found in it. Specifically, there are two types of carbon found in organic materials: carbon 12 (C-12) and carbon 14 (C-14). It is imperative to remember that the material must have been alive at one point to absorb the carbon, meaning that carbon dating of rocks or other inorganic objects is nothing more than inaccurate guesswork.
    Essentially, this means that carbon dating, though a useful tool, is not 100% reliable.

    ReplyDelete
  71. A.) Fill up the remaining data in the table.

    4 , Mass Remaining : ___1/16__________ , Number of Years : ___22,800_______
    5 , Mass Remaining : __1/32___________ , Number of Years : __38,500________
    6 , Mass Remaining : __1/64___________ , Number of Years : __44,200________

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    The limitation in using carbon 14 is if the fossil is so much older its carbon 14 might already gone, since carbon 14 become less after so many year until nothing is left. Therefore it's difficult now to determine the real age of a fossil.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    For me it's not really accurate even it shows computation as a proof because there's still some instances we should consider like for example if we use carbon 14 of a fossil we're not really sure if that is belong to the organism or maybe it just contaminates by other organism so for me it's more on as a good estimation.

    ReplyDelete
  72. A.
    1. 4 Mass remaining: 1/16 Number of years: 22800
    2. 5 Mass remaining 1/32 Number of years: 28500
    3. 6 Mass Remaining 1/64 Number of years: 34200

    B. Carbon Dating is limited in measuring the age of fossils because it can only be used in woods and feathers and not in bones. Also, it is limited in dating the age of fossils when the organism is too old for the half life of Carbon 14 which means that there is a huge possibility that if the organism have died for a long time e.g 50,000 years ago, there will only be a small percentage of undecayed Carbon-14.

    C. Carbon Dating would be only be accurate in dating the age of dead organism if the said organism haven’t died for a long time e.g 50,000 years. Because when it reaches over 50,000 years it would be difficult to measure for there would only be 1% of the original carbon-14 that would remain undecayed.

    ReplyDelete
  73. A. Mass Remaining:1/16 Number of Years :22800
    Mass Remaining:1/32 Number of Years :28500
    Mass Remaining:1/64 Number of Years :34200

    B. 50000 years
    C. Yes. Because Carbon dating gives the actual age of fossils. Try to backread.

    ReplyDelete
  74. A) 4. 1/16 - 22,800
    5. 1/32 - 28,500
    6. 1/64 - 34,200

    B) 50,000 to 60,000 years or so
    C) No, because it only takes the carbon of an alive organism and when it's dead it only has a few carbon that it gets

    ReplyDelete
  75. A.)

    4 , Mass Remaining : 1/16, Number of Years : 22,800
    5 , Mass Remaining : 1/32, Number of Years : 28,500
    6 , Mass Remaining : 1/64, Number of Years : 34,200

    B.) 5700 years
    C.) No, because it only takes the carbon of a alive organism

    ReplyDelete
  76. Kyla Mae Samson (Smyrna)February 18, 2018 at 10:06 PM

    A.Mass remaining: 1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B. 50,000 years

    C. No, because we are able to determine what the ratio was in the unobservable past and carbon dating is accurate for only a few thousand years.
    No, since we are able to determine what the ratio was in the unobservable past & carbon dating is precise for just a few thousand years.

    ReplyDelete
  77. Kyla Mae Samson (Smyrna)February 18, 2018 at 10:07 PM

    A.Mass remaining: 1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B. 50,000 years

    C. No, because we are able to determine what the ratio was in the unobservable past and carbon dating is accurate for only a few thousand years.
    No, since we are able to determine what the ratio was in the unobservable past & carbon dating is precise for just a few thousand years.

    ReplyDelete
  78. 4 , Mass Remaining : 1^2 , Number of Years : 22,800
    5 , Mass Remaining : 1^32 , Number of Years : 28,500
    6 , Mass Remaining : 1^64 , Number of Years : 34,200

    B.
    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things.

    C.
    No because we can not indicate how old a fossil, we do not have the enough knowledge to determine the exact age of a fossil and we do not have the technology to determine the exact age of a foccil.

    ReplyDelete
  79. 4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.
    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils . This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.

    C.
    No because we can not indicate or determine the exact age of a fossil with our current technology and knowledge about the past.


    Von Panlaqui
    12-Salem

    ReplyDelete
  80. Zyan Maverick John R. GutierrezFebruary 18, 2018 at 10:57 PM

    A. 4, 1/16,22800
    5, 1/32,28500
    6, 1/64,34200

    B. It can only date upto not more than 50,000 yrs of age
    C.It is not accurate because it cannot date more than million of age.

    ReplyDelete
  81. A.)
    4.1/16 grams, 22800 Years
    5.1/32 grams, 28500 Years
    6.1/64 grams, 34200 Years

    B.) When the years come up to 95,000 yrs and up.

    C.) Yes, because when an organism die most of them require oxygen to live so that's why Carbon Dating is accurate up to 95,000 years.

    ReplyDelete
  82. A.
    1/16 , 22800
    1/32 , 28500
    1/64 , 34200
    B. 5730 years
    C.
    Yes, because many scientist prove that carbon dating really determines the age of some organisms.

    ReplyDelete
  83. Christian drew temeñaFebruary 18, 2018 at 11:35 PM

    A.
    1/16 , 22800
    1/32 , 28500
    1/64 , 34200
    B. 5730
    C. Yes , because many scientists prove that they can determine the age of some dead organisms.

    ReplyDelete
  84. A.
    4. Mass remaining: 1/16
    Number of years: 22800
    5. Mass remaining: 1/32
    # of year: 28500
    6. Mass remaining: 1/64
    # of year: 34200

    B. 50000-60000 years

    C.No,because even though carbon dating is a reliable method of determining the ages of almost everything around us but once it dies it will stop absorbing.

    ReplyDelete
  85. A.
    4. Mass remaining: 1/16
    Number of years: 22800
    5. Mass remaining: 1/32
    Number of years: 28500
    6. Mass remaining: 1/64
    Number of years: 34200

    B. 50000 - 60000 years or so

    C. No, because even though carbon dating is a reliable method of determining the ages of almost everything around us, once it dies it will stop absorbing.

    Albert Balagat
    STEM - Salem

    ReplyDelete


  86. A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16, Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64, Number of Years : 34,200
    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    - can determine the half-life carbon-14
    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason
    -No, because carbon-14 makes it unreliable for dating fossils over about 50,000 years old

    ReplyDelete
  87. A.
    1/16 22800
    1/32 28500
    1/64 34200
    B.
    this technique will not work on older fossils like those of the dinosaurs alleged to be millions of years old
    C.
    NO, because it can only be used on carbon-containing things that were once alive. The method of calculating radiometric dates is like using an hourglass. You can use the hourglass to tell time if you know several things: the amount of sand in the top of the hourglass when it started flowing, the rate that the sand flows through the hole in the middle, and that the quantity of sand in each chamber has not been tampered with. If any of these three conditions is not accurately known, the hourglass will give an inaccurate measure of time.

    Maria Sophia S. Mojica
    Shechem

    ReplyDelete
  88. Answers:
    A.

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64, Number of Years : 34,200

    B. C-14 can only be found on organic materials

    C. Yes, Because of the Mass Remaining you can identify the Number Years...

    ReplyDelete
  89. A.
    4. 1/16 22,800
    5. 1/32 28,500
    6. 1/64 34,200
    B. The carbon 14 can be use only id it is 50,000 years old or younger
    C.yes because it has scietific basis

    ReplyDelete
  90. Mario P. Esguerra III
    Stem - Salem
    A. 4.) 1/16 , 22,800
    5.) 1/32 , 28,500
    6.) 1/64 , 34,200

    B. Around 50,000 years
    C. No, Because it is radioactive, carbon 14 steadily decays into other substances. But scientists have long recognized that carbon dating is subject to error because of a variety of factors, including contamination by outside sources of carbon. Therefore they have sought ways to calibrate and correct the carbon dating method.

    ReplyDelete
  91. A. 1/16 , 22,800
    1/32 , 28,500
    1/64 , 34,200


    B. 50,000-60,000
    C.No because carbon dating will stop absobing when it dies.

    ReplyDelete
  92. Dave S. Bulactiar
    STEM/Salem

    A.
    4. 1/16 || 22,800
    5. 1/32 || 28,500
    6. 1/64 || 34,200

    B.
    It can only measure around 50,000 years ago

    C.
    Yes, carbon dating is measured from radioactive isotopes of Carbon-14.

    ReplyDelete
  93. Lawrence Mingote
    Stem-Shunem
    A.)
    4.1/16,22,800
    5.1/32,28,500
    6.1/64,34,200
    B.) 50,000 yrs
    C.) Yes, because it is proved by the scientists.

    ReplyDelete
  94. 4. Mass Remaining : 1^2 , Number of Years : 22,800
    5. Mass Remaining : 1^32 , Number of Years : 28,500
    6. Mass Remaining : 1^64 , Number of Years : 34,200

    B.
    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things.

    C.
    No, because We can not determine how old a fossil is, even if we determine what age or era it is from, its date or year is still unknown, how would scientists know that a bone is 10000 yrs old without knowing when it died.

    ReplyDelete
  95. Christian Airish Dondoyano, Salem 12
    4. Mass Remaining : 1^2 , Number of Years : 22,800
    5. Mass Remaining : 1^32 , Number of Years : 28,500
    6. Mass Remaining : 1^64 , Number of Years : 34,200

    B.
    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.

    C.
    No because, scientists cannot indicate how old a fossil is without knowing when it died, we do not have the enough knowledge to determine the exact age of a fossil.

    ReplyDelete
  96. A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16, Number of Years : 22, 800
    5 , Mass Remaining : 1/32, Number of Years : 28, 500
    6 , Mass Remaining : 1/64, Number of Years : 34, 200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    -Carbon-14 is only used in recent artifacts up to 50, 000 years old and will not work in older fossils with an age of over 50,000 years.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    -As long as the age of the dead organisms doesn’t exceed the 50,000 years limit of the C-14, I think that Carbon dating would be an accurate method of determining the correct age of the organism.

    -Mark Hachero

    ReplyDelete
  97. A)
    4) 1/16 ; 22,800
    5) 1/32 ; 28,500
    6) 1/64 ; 34,200

    B) 5700 years
    C) No , Beacause it only takes the carbon of the alive or natural organism and when its dead it only has a few carbons that it gets.

    Jc Democrito
    STEM SALEM

    ReplyDelete
  98. Jeruel T. De Villa
    Salem

    A.)
    4. 1/16 = 22,800
    5. 1/32 = 28,500
    6. 1/64 = 34,200

    B.) 5,700 years
    C.) No, because it only takes natural organism's carbon and only few carbon will get when it is dead.

    ReplyDelete
  99. Mark Joseph Casas
    Stem-Shiloh

    4. 1/16 , 22800
    5. 1/32 , 28500
    6. 1/64 . 34200

    ReplyDelete
  100. Janean Joy Ramos
    Stem-Shiloh

    4. 1/16 , 22800
    5. 1/32 , 28500
    6. 1/64 . 34200

    ReplyDelete
  101. Kim Bejenia
    Stem-Shiloh

    4. 1/16 , 22800
    5. 1/32 , 28500
    6. 1/64 . 34200

    ReplyDelete
  102. Glen Marc L. Hizon
    Gr. 12 - Salem
    4 , Mass Remaining : _____1/16________ , Number of Years : ___22800___
    5 , Mass Remaining : _____1/32________ , Number of Years : ___28500___
    6 , Mass Remaining : _____1/64________ , Number of Years : ___34200___

    ReplyDelete
  103. John Vincent Lunar
    Salem

    A.)
    4. 1/16 = 22800
    5. 1/32 = 28500
    6. 1/64 = 34200

    B.) 5700 years
    C.) No , because it only takes the carbon of the natural organisms and and takes few when it is dead.

    ReplyDelete
  104. Mariel Allen Flores -SalemFebruary 19, 2018 at 11:10 PM

    a.
    4.) 1/16, 22800
    5.) 1/32, 28500
    6.) 1/64, 34600
    b.
    can determine the age of biological artifacts up to 50,000 years old
    c.
    a website stated that carbon dating cannot be used on artifacts over about 50,000 years old. These artifacts have gone through many carbon-14 half-lives, and the amount of carbon-14 remaining in them is miniscule and very difficult to detect. or it can be contaminated by other chemicals.

    ReplyDelete
  105. A. 4. 1/16 22800
    5. 1/32 28500
    6. 1/64 34200

    B. The limit of using carbon-14 is they cannot say the exact age of the fossil because they only measuring the age of the organic material not the exact age of fossil to predict the age of the fossil.

    C. No. Because carbon dating is measuring organic material not the exact age of the fossil they only predicting it by knowing the age of the organic material.

    ReplyDelete
  106. Ralfh John Villena
    Stem-Salem

    A.) 4. 1/16, 22800
    5. 1/32, 28500
    6. 1/64, 34200

    B.)Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils. This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things.


    C.) Anthropology, and many other disciplines. The radiocarbon dating process starts with measuring Carbon-14, a weakly radioactive isotope of Carbon, followed by calibration of radiocarbon age results to calendar years.

    ReplyDelete
  107. A. 4. 1/16 22800
    5. 1/32 28500
    6. 1/64 34200

    B. The limit of using carbon-14 is they cannot say the exact age of the fossil because they only measuring the age of the organic material not the exact age of fossil to predict the age of the fossil.

    C. No. Because carbon dating is measuring organic material not the exact age of the fossil they only predicting it by knowing the age of the organic material.

    Andrei agassi lobrio
    12-salem

    ReplyDelete
  108. John Vincent Lunar STEM-Salem

    A.
    4- 1/16,22800
    5- 1/32,28500
    6- 1/64,34200

    B. 5700 years
    C. No, because of its short period of limit in using carbon-14 also when an organism dies the carbon on its body is disaappearing so if it takes an organism who aged in like a million years then the carbkn remaining to its body is very very few close to nothing or there is no carbon on its body,

    ReplyDelete
  109. Kate Irish V. AmodiaFebruary 20, 2018 at 8:05 AM

    A.)
    4. 1/16 ; 22,800
    5. 1/32 ; 28,500
    6. 1/64 ; 34,200

    B.)
    C-14 can only measures a fossil that ages 5730 years. Fossils that extend thru that years is not covered by C-14 anymore. Therefore, the limit of C-14 is only on 5730 years.

    C.)
    I'm in between

    Only because I think we must consider other facts of determining the age of a dead organisms. Yes C-14 has formulas and can be really accurate at some point BUT at the end of the day we must know that we cannot just stick to one solution for our knowledge we MUST EXPLORE and search for more info/ facts so that we can create in our mind a CONCRETE answer in determining the correct age of dead organisms.

    ReplyDelete
  110. Kate Irish V. AmodiaFebruary 20, 2018 at 8:05 AM

    A.)
    4. 1/16 ; 22,800
    5. 1/32 ; 28,500
    6. 1/64 ; 34,200

    B.)
    C-14 can only measures a fossil that ages 5730 years. Fossils that extend thru that years is not covered by C-14 anymore. Therefore, the limit of C-14 is only on 5730 years.

    C.)
    I'm in between

    Only because I think we must consider other facts of determining the age of a dead organisms. Yes C-14 has formulas and can be really accurate at some point BUT at the end of the day we must know that we cannot just stick to one solution for our knowledge we MUST EXPLORE and search for more info/ facts so that we can create in our mind a CONCRETE answer in determining the correct age of dead organisms.

    ReplyDelete
  111. Royce Dannrhey Balmas
    Shiloh-12
    A. 4. 1/16, 34,200
    5. 1/32, 68,400
    6 1/64, 136,800
    B. There's no limit in carbon-14 when you measured to determine a fossil age.
    C. Carbon dating is not a accurate method to determine the correct age of dead organism but it's closely like correct.

    ReplyDelete
  112. A. 1. MR: 0 NY: 22800
    2. MR: O NY: 28500
    3. MR :0 NY: 34200
    B. Any fossils older than 50,000 yeard old can't be measurable by radiocarbon dating


    C. It migth be accurate forseveral organism that gets their carbon directly from the air Because there are organism that get their carbon from limestone of water where they lived in and the carbon from those sources are very low that will make the fossil of that organism look older and give older age than its real age after the dating.

    ReplyDelete
  113. mark Kevin BalajadiaFebruary 20, 2018 at 6:36 PM

    A.4. 1/16 22,800 yrs
    5 1/32 28,500 yrs
    6 1/64 34,200 yrs
    B.the older the subject the less carbon-14 so its so hard for us to determined the correct aged if the subj is too old.
    C.yes, because the carbon-14 in a thing or animal determined the aged.

    ReplyDelete
  114. A
    4) Mass Remaining 1/2.
    Number of Years:22800
    5) Mass Remaining: 1/34
    Number of Years:28500
    6) Mass Remaining: 1/64
    Number of Years: 34200

    B)
    Carbon-14, Radiometric Dating and Index Fossils

    Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old). This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers. Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things.


    C) No because we do not really know the exact year or time a dead organism got extinct. In our generation today there are no technology that can determine a dead organisms correct age and we do not have enough knowledge in creating an invention in determining an exact age of a fossil.

    ReplyDelete
  115. A.)Mass Remaining:Number of Years:
    4. 1/16 22,800
    5. 1/32 28,500
    6. 1/64 34,200
    B.) measuring the C-14 level we work out how many half lives old the sample is and therefore how old it is. The trouble is that after 40,000 years there is under 1% of the original C-14 left, and it becomes too hard to measure it accurately.

    C.) Carbon dating is not that accurate because It is very difficult for scientists to know how much carbon would have originally been present. The findings will differ slightly, at which point scientists apply so-called ‘correction tables’ to amend the results and eliminate discrepancies.

    ReplyDelete
  116. A.)Mass Remaining:Number of Years:
    4. 1/16 22,800
    5. 1/32 28,500
    6. 1/64 34,200
    B.) measuring the C-14 level we work out how many half lives old the sample is and therefore how old it is. The trouble is that after 40,000 years there is under 1% of the original C-14 left, and it becomes too hard to measure it accurately.

    C.) Carbon dating is not that accurate because It is very difficult for scientists to know how much carbon would have originally been present. The findings will differ slightly, at which point scientists apply so-called ‘correction tables’ to amend the results and eliminate discrepancies.

    ReplyDelete
  117. A. Mass remaining: 1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B. 50,000 years
    C. No, because we can determine what the ratio was in the unobservable past and carbon dating is accurate for only a few thousand years.

    ReplyDelete
  118. 4. Mass remaining: 1/16
    No.of years:22,800
    5. Mass remaining: 1/32
    No.of years:28,500
    6. Mass remaining:1/64
    No.of years:34,200

    B. It's limit is when an organism reach it's 50,000 years because it will decay and the carbon-14 will gone.

    C. Yes it is but only to the organisms who is 50,000 years below. Because when the dead organism decay, the carbon will gone.

    ReplyDelete
  119. Mass remaining: 1/16
    No.of years:22,800
    5. Mass remaining: 1/32
    No.of years:28,500
    6. Mass remaining:1/64
    No.of years:34,200

    B. It's limit is when an organism reach it's 50,000 years because its carbon-14 will decay and eventually gone.

    C. Yes it is but only to the organisms who is 50,000 years below. Because when the dead organism decay, the carbon will gone

    ReplyDelete
  120. A. 4, Mass Remaining: 1/16
    Number of years: 22,800
    5, Mass Remaining: 1/32
    Number of years: 28,500
    6, Mass Remaining: 1/64
    Number of years: 34,200

    B. It is not easy to determine the real age of a fossil when using carbon 14 because, maybe the carbon 14 of a fossil had already disappeared because it is so old since carbon 14 continue fading after so many years until all were gone.

    C. For me it is not really accurate because those computations are only proof and estimation only and I think it doesn't give the exact age of a fossil. Maybe there are other organisms mixed in the fossil or organism that can cause changes of age of an organism.

    ReplyDelete
  121. 4.1/16=21,800
    5.1/32=28,500
    6.1/64=34,200
    B.5,700 years
    c.No,because it only takes the carbon of the alive or natural organism and when its dead it only has a few carbons that it gets.

    ReplyDelete
  122. 4. 1/16 - 22,800
    5. 1/32 - 28,500
    6. 1/64 - 34,200

    B. The limit of Carbon-14 is the number of half life.

    C. Yes because it indicate the years it lived.

    ReplyDelete
  123. A.
    4. Mass Remaining: 1/16 No. of years: 22,800
    5. Mass Remaining: 1/32 No. of years: 28,500
    6. Mass Remaining: 1/64 No. of years: 34,200
    B. 5,730 years
    C. Carbon Dating is an accurate method for scientists to measure an organisms' age, however, it can only be inaccurate only if the material has no carbon in it.

    ReplyDelete
  124. A.
    4. Mass Remaining: 1/16 No. of years: 22,800
    5. Mass Remaining: 1/32 No. of years: 28,500
    6. Mass Remaining: 1/64 No. of years: 34,200
    B. 5,730 years
    C. Carbon Dating is an accurate method for scientists to measure an organisms' age, however, it can only be inaccurate only if the material has no carbon in it.

    ReplyDelete
  125. A.
    1. 1/16,22,800 yrs
    2. 1/32,28,500 yrs
    3. 1/64,34,200 yrs
    B. 30,000-50,000 yrs
    C. For me, carbon dating is not an accurate method of determining the correct age of dead organism because carbon dating has is limitation in years and sometimes the result of carbon dating is not reliable.

    ReplyDelete
  126. Dennis Adrian Cabaltea
    Stem-Salem

    A.) 1/16, 22800
    1/32, 28500
    1/64, 34200

    B.) Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils like those of the dinosaurs alleged to be millions of years old.

    C.) Carbon-14 is a radioactive isotope of carbon. The half-life of carbon-14 is approximately 5,730 years. The short half-life of carbon-14 means it cannot be used to date fossils that are allegedly extremely old, example are dinosaurs the evolution alleges lived millions of years ago. Levels of carbon-14 become difficult to measure and compare after about 50,000 years between 8 and 9 half lives; where 1% of the original carbon-14 would remain undecayed.

    ReplyDelete
  127. a.)
    1. 4 Mass remaining: 1/16 Number of years: 22800
    2. 5 Mass remaining 1/32 Number of years: 28500
    3. 6 Mass Remaining 1/64 Number of years: 34200



    B.) Carbon dating can be use only to the woods and feather and not on bones. Also, if the organism is way beyond older than the half life of carbon-14 there will be a small portion of undecayed carbon-14. This can be a reason for the misaccuracy in terms of aging and may affect a lot of studies.

    C.) The carbon dating can only be accurate to those organism with under 50,000 years of life. Thus, exceeding it will cause misaccuracy in determing the age of dead organism because of very little amount of undecayed carbon-14

    ReplyDelete
  128. 4. 1/16 , 22,800
    5. 1/32 , 28,500
    6. 1/64 , 34,200

    ReplyDelete
  129. 4 , Mass Remaining :, 1/16
    Number of Years : 22800
    5 , Mass Remaining :, 1/32
    Number of Years : 28500
    6 , Mass Remaining :, 1/64
    Number of Years : 34200

    B) Carbon dating only can use in woods and feathers not in bone. Of the organism is older than half life carbon-14 there will be a small portion of decomposed carbon-14.

    C) Carbon dating only measure 50,000 years of life. So, it will cause misaccuracy in measuring age of dead organism.

    John Lord Ortillada
    12- Shechem

    ReplyDelete
  130. a) 1/6 22,800 yrs
    1/32 28,500 yrs
    1/64 34,200 yrs
    b) 50,000 yrs
    c) Yes, because you can easily determine the age of fossils.

    ReplyDelete
  131. Quiz 1:
    A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    The Carbon-14 can get only in organic materials but theres a few categories of artifacts that can be dated using carbon-14; however, they cannot be more 50,000 years old.


    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason
    No, Carbon Dating is use by people because that is the only way to determine the correct age of dead organisms but in this case there's a limited years, you will not know the age of the rock if it is too old.

    Palaganas, Jeffrey Vidad
    Grade 12 - Shechem

    ReplyDelete
  132. Wenard bermejo
    stem-sinai
    A) 4*1/16 - 22,800
    5*1/32 - 28,500
    6*1/64 - 34,200
    B) BECAUSE it can measured 5000 years below.
    C) No, because carbon dating is limited like what i said.

    ReplyDelete
  133. jan andrei zamora
    stem-sinai
    A) 4*1/16 - 22,800
    5*1/32 - 28,500
    6*1/64 - 34,200
    B) BECAUSE it can measured 5000 years below.
    C) No, because carbon dating is limited like what i said.

    ReplyDelete
  134. ken lorence robiños
    stem-sinai
    A) 4*1/16 - 22,800
    5*1/32 - 28,500
    6*1/64 - 34,200
    B) BECAUSE it can measured 5000 years below.
    C) No, because carbon dating is limited like what i said.

    ReplyDelete
  135. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Jennidean Kate P. Tanghal
    XII-Shechem

    ReplyDelete
  136. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Jennidean Kate P. Tanghal
    XII- Shechem

    ReplyDelete
  137. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Jozel Mae Jamilla
    XII-Shechem

    ReplyDelete
  138. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Lyka Marie Casuyon
    XII-Shechem

    ReplyDelete
  139. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Maricar Lopena
    XII-Shechem

    ReplyDelete
  140. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    shem arizo
    12 shechem

    ReplyDelete
  141. A.)1/16 : 22,800
    1/32: 38, 500
    1/64: 44,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    shem arizo
    shechem

    ReplyDelete
  142. Quiz 1:
    A.) Fill up the remaining data in the table.

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    The Carbon-14 can get only in organic materials but theres a few categories of artifacts that can be dated using carbon-14; however, they cannot be more 50,000 years old.


    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason
    No, Carbon Dating is use by people because that is the only way to determine the correct age of dead organisms but in this case there's a limited years, you will not know the age of the rock if it is too old.

    PALAGANAS JEFFREY VIDAD
    GRADE 12 - SHECHEM

    ReplyDelete
  143. Visitacion,Darrel S.
    STEM-SHECHEM

    Quiz 1:
    A.) Fill up the remaining data in the table.

    4 , Mass Remaining :1/16 Number of Years :22,800
    5 , Mass Remaining :1/32 Number of Years :28,500
    6 , Mass Remaining :1/64 Number of Years :34,200

    B. The limit is you cant determine the age of the fossil if it exceed to the given maximum years that a carbon 14 may determine

    C. No. First of all it doesnt determine the "exact" age and it has its own limitation to determine the age of the fossil

    ReplyDelete
  144. Renzsky E Enriquez
    Grade 12 Shechem

    A.
    4. 1/16 - 22,800
    5. 1/32 - 28,500
    6. 1/64 - 34,200

    B. 50,000 is the limit in using carbon-14 as a measure to determine a fossil’s age

    C. Yes, because for so many years it was used by the scientists no doubt that it's not accurate because this technique is scientifically proven and besides we are able to determine what the ratio was in the unobservable past to a certain extent.By taking a carboniferous specimen of known age (that is, a specimen which we are able to date with reasonable certainty through some archaeological means), scientists are able to determine what the ratio was during a specimen's lifetime. They are then able to calibrate the carbon dating method to produce fairly accurate results. Carbon dating is thus accurate within the timeframe set by other archaeological dating techniques.

    ReplyDelete
  145. A.)
    4, Mass Remaining: 1/16, Number of Years: 22,800
    5, Mass Remaining: 1/32, Number of Years: 28,500
    6, Mass Remaining: 1/64, Number of Years: 34,200

    B.) The limit of using Carbon-14 in dating the age of fossils is that the measurement it produced is only an estimation of the actual age of the fossil because it only base on the amount of the carbon-14 remained in the fossil.

    C.) No, it is not accurate, the amount of carbon-14 is continously added up if the organism continuously consume food when it is alive yet it stops when it dies, what if the organism dies instantly for example at its birth without consuming any carbon-14? We will not know what the actual age of the fossil is if we use the method.

    ReplyDelete
  146. A.)
    4, Mass Remaining: 1/16, Number of Years: 22,800
    5, Mass Remaining: 1/32, Number of Years: 28,500
    6, Mass Remaining: 1/64, Number of Years: 34,200

    B.) The limit of using Carbon-14 in dating the age of fossils is that the measurement it produced is only an estimation of the actual age of the fossil because it only base on the amount of the carbon-14 remained in the fossil.

    C.) No, it is not accurate, the amount of carbon-14 is continously added up if the organism continuously consume food when it is alive yet it stops when it dies, what if the organism dies instantly for example at its birth without consuming any carbon-14? We will not know what the actual age of the fossil is if we use the method.

    ReplyDelete
  147. A.)
    4, Mass Remaining: 1/16, Number of Years: 22,800
    5, Mass Remaining: 1/32, Number of Years: 28,500
    6, Mass Remaining: 1/64, Number of Years: 34,200

    B.) The limit of using Carbon-14 in dating the age of fossils is that the measurement it produced is only an estimation of the actual age of the fossil because it only base on the amount of the carbon-14 remained in the fossil.

    C.) No, it is not accurate, the amount of carbon-14 is continously added up if the organism continuously consume food when it is alive yet it stops when it dies, what if the organism dies instantly for example at its birth without consuming any carbon-14? We will not know what the actual age of the fossil is if we use the method.

    ReplyDelete
  148. A.)
    1/16 22,800yrs
    1/32 28,500yrs
    1/64 34,200yrs

    B.)50,000 yrs

    C.)Yes, because is a method for determining the age of an object containing organic material

    ReplyDelete
  149. Vanessa May Tejada
    Grade 12: SHECHEM


    4. 1/16 Years: 22,800
    5. 1/32 Years: 28,500
    6. 1/64 Years: 34,200

    B. It is hard to identify the limitation of using a Carbon 14 to identify the age if a fossil because if the age of a fossil is too old it hard to identify it's age because the amount of a fossil is small. Also, if the age of a fossil is a million years of age because of its half life it is very hard to detect the age of a fossil.

    C. No, as I was stated it is really hard to determine the correct age of a fossil or a dead organism. Let's say if an organism died a million years ago and we are planning to know the exact age of it, it is really hard bacause the carbon 14 of a dead organism is small or hard to identify because of its half life.

    ReplyDelete
  150. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Maricar R. Lopena
    STEM12 SHECHEM

    ReplyDelete
  151. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Maricar R. Lopena
    STEM12 SHECHEM

    ReplyDelete
  152. KIMBIERLY JONES A. BORROMEO
    STEM-SAMARIA

    A.
    4. 1/16 22,800
    5. 1/32 28,500
    6. 1/64 34,200

    B. The limit in using carbon-14 as a measure to determine the fossil's age is 50,000 years.

    C. Yes, because carbon-14 can be found in all sorts of organic things like wood and bone.

    ReplyDelete
  153. Maria Jenica V. Cantores
    A) 4, Mass remaining: 1/16 , Number of years: 22,800
    5, Mass remaining: 1/32 , Number of years: 28,500
    6, Mass remaining: 1/64 , Number of years: 34,200

    B) The limitation of using carbon-14 as a measurement is it takes/needs a very long years to discover, and it needs further studies. This process of measurement takes the researchers time and life before discovering the age of fossil.

    C) No, because it has no sufficient evidences that we must based in amount of carbon to determine the exact age of organisms.

    ReplyDelete
  154. Antonio S isuela. 12-SHECHEM
    A.
    4)1/16 and 22,800
    5)1/32 and 28,500
    6)1/64 and 34,200
    B. the limit of using carbon-14 is that it cannot be use to date biological artifacts.
    C. maybe, because carbon dating use to determine the age of biological artifacts but not up to the 1st day there is a limit.

    ReplyDelete
  155. A. 4. 1/16, 22,800
    5. 1/32, 28,500
    6. 1/64, 34,200
    B.50,000 years
    C. yes, because this is also the only way how we can explore what happened in our history. they can also see the age of dead organism based on the age of the rocks where the fossil found.

    ReplyDelete
  156. Zulueta, Jenilyn C.
    STEM SHECHEM

    4. Mass remaining : 1/16
    Number of years : 22,800

    5. Mass remaining : 1/32
    Number of years : 28,500

    6. Mass remaining : 1/64
    Number of years : 34,200

    B. Carbon dating cannot be used on most fossils, not only because they are almost always allegedly too old, but also because rarely contain the original carbon of the organism that has been fossilized. Also, many fossils are contaminated with carbon from the environment during collection or preservation procedures.

    C. Yes, because cArbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere.

    ReplyDelete
  157. Zulueta, Jenilyn C.
    STEM SHECHEM

    4. Mass remaining : 1/16
    Number of years : 22,800

    5. Mass remaining : 1/32
    Number of years : 28,500

    6. Mass remaining : 1/64
    Number of years : 34,200

    B. Carbon dating cannot be used on most fossils, not only because they are almost always allegedly too old, but also because rarely contain the original carbon of the organism that has been fossilized. Also, many fossils are contaminated with carbon from the environment during collection or preservation procedures.

    C. Yes, because carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere.

    ReplyDelete
  158. a.
    4,Mass remaining: 1/16 no. years: 22800
    5,Mass remaining: 1/32 no. years: 28500
    6,Mass remaining: 1/64 no. years: 34200

    b. For me there is no exact limit .
    C. Maybe, because carbon dating is also know for calculating the old obejects and also by measuring the amount of it.

    ReplyDelete
  159. Zulueta, Jenilyn C.
    STEM SHECHEM

    4. Mass remaining : 1/16
    Number of years : 22,800

    5. Mass remaining : 1/32
    Number of years : 28,500

    6. Mass remaining : 1/64
    Number of years : 34,200

    B. Carbon dating cannot be used on most fossils, not only because they are almost always allegedly too old, but also because rarely contain the original carbon of the organism that has been fossilized. Also, many fossils are contaminated with carbon from the environment during collection or preservation procedures.

    C. Yes, because carbon dating is a variety of radioactive dating which is applicable only to matter which was once living and presumed to be in equilibrium with the atmosphere.

    ReplyDelete
  160. A.
    4, 1/16, 22,800
    5, 1/32, 28,500
    6, 1/64, 34,200

    B.The only limit in using Carbon-14 is when an animal or plant died they dont consume carbon 14 then if that case happen the ratio will begin to drop, and also if the fossil is too old

    C. No, because it still has a limitation,and based on what I've read the older dates that radioactive dating can measure is until 50,000 years only.The research also mention that they need years of work to develop the technique so that accurate measure of fossil can be obtained.

    Arlyn Agno
    12 Shechem

    ReplyDelete
  161. Jhonnie N. Barrietos - 12-SHECHEM
    4)1/16 and 22,800
    5)1/32 and 28,500
    6)1/64 and 34,200
    B. it cannot be use to date biological artifacts.
    C. yes it is the accurate method of determining the age of dead organisms but in the age up to 50,000 years.

    ReplyDelete
  162. Shankyle Zapanta 12-shechem
    4)1/16 and 22,800
    5)1/32 and 28,500
    6)1/64 and 34,200
    B)carbon-14 cannot used in determining age of biological artifacts
    C)Yes it is but according to scientist its only up to the 50,000 years.

    ReplyDelete
  163. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cant be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because of numerical computation and data.

    Jozel Mae B. Jamilla
    STEM-Shechem

    ReplyDelete
  164. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Shem Arizo
    STEM12 SHECHEM

    ReplyDelete
  165. 4 , Mass Remaining : , Number of Years : 22800
    5 , Mass Remaining : _____________ , Number of Years : 28500
    6 , Mass Remaining : _____________ , Number of Years : 34200

    ReplyDelete
  166. Casas, Mark Joseph
    STEM - Shiloh
    A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    ReplyDelete
  167. Casas, Mark Joseph
    A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    ReplyDelete
  168. A 4. 1/16, 22,800
    5. 1/32, 28,500
    6. 1/64, 34,200

    B. 50000years
    C. yes, because we can compute the age of the dead organism by looking where does these fossils is and also because of the formation of the rocks.

    ReplyDelete
  169. Kevin fabito
    12-shechem
    A.
    4)1/16 and 22,800
    5)1/32 and 28,500
    6)1/64 and 34,200
    B. the limit of using carbon-14 is that is used to determine the age of biological artifacts up to 50,000 years old. It could'nt detect the biological artifacts
    C. Depending on how old the fossils are.

    ReplyDelete
  170. A.
    4.1/32,22,800
    5.1/64,28,500
    6.1/128,34,200
    B.They cannot be more 50,000 years old. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air. This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock. The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating. This restriction extends to animals that consume seafood in their diet.
    C. no, because determining correct age of dead organism in carbon dating was a calculated only.
    Mark Deniel Esporlas
    12-Smyrna


    ReplyDelete
  171. A.
    4.1/32,22,800
    5.1/64,28,500
    6.1/128,34,200
    B.They cannot be more 50,000 years old. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air. This rules out carbon dating for most aquatic organisms, because they often obtain at least some of their carbon from dissolved carbonate rock. The age of the carbon in the rock is different from that of the carbon in the air and makes carbon dating data for those organisms inaccurate under the assumptions normally used for carbon dating. This restriction extends to animals that consume seafood in their diet.
    C. No, Because carbon dating was only used calculated method, they do not know the real age of the organic material.

    Aife Joy Annedhie Armas
    12-Shechem

    ReplyDelete
  172. Absolor,Jade Hazel
    Grade 12 STEM-SHECHEM
    Quiz 1:
    A.) Fill up the remaining data in the table.

    4 , Mass Remaining :1/16 Number of Years :22,800
    5 , Mass Remaining :1/32 Number of Years :28,500
    6 , Mass Remaining :1/64 Number of Years :34,200

    B.) If we use carbon 14 to determine the age of an fossil. Carbon 14 can only be found on organic materials

    C.) No, because carbon 14 has limitation so if it has limitation you wouldn't know the age of that particular fossil if the year exceeded to the maximum year covered by the carbon 14.

    ReplyDelete
  173. Joshua james Racelis

    A.

    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32, Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    -it will take about 5,700 years. which is the half-life of carbon-14.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    - i think carbon dating is accrate method because a living organism has carbon-14. For the amount of Carbon in the organism’s body to become half, it will take about 5,700 years; which is the half-life of carbon-14.

    ReplyDelete
  174. 4, 1/16 : 22,800
    5, 1/32 : 28,500
    6, 1/64 : 34,200

    B.) 50,000 years
    C.) Carbon dating is used to determine the age of biological artifacts up to 50,000 years old. This technique is widely used on recent artifacts, but educators and students alike should note that this technique will not work on older fossils (like those of the dinosaurs alleged to be millions of years old)


    -Kit Suñaz

    ReplyDelete
  175. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Faustino, David James L
    STEM12 SHECHEM

    ReplyDelete
  176. Ramirez, Nicolejay STEM-Sinai
    A)
    4. 1/16 22800
    5. 1/32 28500
    6. 1/64 34200
    B) Carbon-14 dating can be applied in dating a fossils but it is limited by time span because it can only age fossil with an elapsed time of 50k yrs.

    C) It depends beacause, It can only date a dead org with an elapsed time of 50k yrs accurately but when it overreached 50k yrs it will not become accurate anymore.

    ReplyDelete
  177. Shechem

    A.
    4)1/16 | 22,800 yrs
    5)1/32 | 28,500 yrs
    6)1/64 | 34,200 yrs

    B.
    -The limit of using carbon 14 to determine the age of a fossil is if the fossil is older than 50,000 years, it can no longer determine the age of it.

    C.
    -somehow it is Accurate if we are talking to a small ratio/age of the fossil's lifetime, but beyond 50,000 years, the accuracy is questionable.

    ReplyDelete
  178. Janine Ramos stem-shiloh
    A. 1/16,22800
    1/32,28500
    1/64,34200
    B. The carbon-14 dating can only be applied to organisms that died up to 50k yrs.
    C. No, because it can only date organisms that died 50k yrs ago

    ReplyDelete
  179. Lazado, Jhon Lorenz D.
    12-SINAI

    A.
    4. 1/16, 22,800
    5. 1/24, 28,500
    6. 1/32, 34,200

    B. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.

    C. Yes, because Carbon dating is used to determine the age of biological artifacts.

    ReplyDelete
  180. Lazado, Jhon Lorenz D.
    12-SINAI

    A.
    4. 1/16, 22,800
    5. 1/24, 28,500
    6. 1/32, 34,200

    B. Carbon-14 cannot be used to date biological artifacts of organisms that did not get their carbon dioxide from the air.

    C. Yes, because Carbon dating is used to determine the age of biological artifacts.

    ReplyDelete
  181. Mark Casas STEM-SHILOH
    A.) 1/16 22800
    1/32 28500
    1/64 34200
    B.) using this method in dating fossil, you can only date fossil that have lived 50000 yrs ago.
    C.) No. Beacause, it can only tell accurate results for oraganisms that died 50000 yrs ago. So how about some organisms that lived million yrs ago?

    ReplyDelete
  182. 4 Mass Remaining = 1/16 Number of Years = 22,800
    5 Mass Remaining = 1/32 Number of Years = 28,500
    6 Mass Remainning = 1/64 Number of Years = 34,200

    ReplyDelete
  183. A.) 22,800, 1/16
    28,500, 1/32
    34,200, 1/64
    B.) When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.
    C.) Yes, because to the numerical computation and data.

    Francisco S. Tan Shechem
    Francisco091398@gmail.com

    ReplyDelete
  184. A.)1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Lyka Marie Casuyon
    12 SHECHEM

    ReplyDelete
  185. wilfredo c tapat
    stem smyrna
    A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. No, it is not accurate to determine the correct age of the dead organism. But, it can be a basis to know what era or period the dead organism existed.

    ReplyDelete
  186. Jenno Villasis
    SHUNEM
    4.1/16,22,800
    5.1/32,28,500
    6.1/64,34,200

    ReplyDelete
  187. STARLIGHT LIMBANGANON
    SHUNEM
    4.1/16,22,800
    5.1/32,28,500
    6.1/64,34,200

    ReplyDelete
  188. A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. No, it is not accurate to determine the age of a dead organism. but it will be useful for finding knowledge about the organism in the past

    ReplyDelete
  189. Gelmore Laguio
    Stem Salem
    A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. no, it is not accurate to determine an age of a dead organism, but it is a useful methodology to gain knowledge about the organisms lived in the past

    ReplyDelete
  190. A.)
    1/16 : 22,800
    1/32: 28, 500
    1/64: 34,200

    B.). When the fossils are become very older it cannot be trace because the carbon 14 is being disappear because of the age of fossils.

    C.) Yes, because to the numerical computation and data.

    Atencio, Kenneth N.
    STEM12 SHECHEM

    ReplyDelete
  191. A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200

    B.50,000 years

    C. No because we are able to determine the ratio was in the way beyond past and carbon dating is only accurate for a few thousands of years.

    -Gian Niño Epino
    GRADE12 Salem

    ReplyDelete
  192. Jericho V. Argarin
    STEM 12-Samaria

    A.) Fill up the remaining data in the table.
    4 , Mass Remaining : 1/16 , Number of Years : 22,800
    5 , Mass Remaining : 1/32 , Number of Years : 28,500
    6 , Mass Remaining : 1/64 , Number of Years : 34,200

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?
    - It is said that maximum date for Carbon 14 is about 50,000 to 60,000 years old.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.
    - Yes, since when the animal or plant dies, it stops exchanging carbon with its environment, and from that point onward the amount of carbon-14 it contains begins to decrease as the carbon-14 undergoes radioactive decay.

    ReplyDelete
  193. Mailyn Duelas Obena - SmyrnaFebruary 25, 2018 at 9:05 PM

    A.) Fill up the remaining data in the table.

    4 , Mass Remaining : ____1/16_____ , Number of Years : ______22,800__
    5 , Mass Remaining : _______1/32______ , Number of Years : ___28500_______
    6 , Mass Remaining : _________1/64___ , Number of Years : __34200________

    B.) What is the limit in using carbon-14 as a measure to determine a fossil’s age?

    - Its only limited to 50000 years old and so dinosaurs age cannot be determined by carbon-14.

    C.) Do you think Carbon Dating is an accurate method of determining the correct age of dead organisms? Please state your reason.

    - Yes, for recent fossils that are not aged more than 50000 years old. Because carbon dating uses the properties of radiocarbon C-14 which is a radioactive isotope of carbon which can calculate absolute age.

    ReplyDelete
  194. A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. Yes, we can determine it if the dead organisms age are raging only in thousand years

    ReplyDelete
  195. A.Mass remaining:1/10 # of years: 22,800
    Mass remaining: 1/12 # of years: 28,500
    Mass remaining: 1/14 # of years: 34,200
    B.50,000 years
    C. Yes, we can determine it if the dead organisms age are raging only in thousand years

    ReplyDelete
  196. A.
    4. 1/16, 23,800
    5. 1/32, 29,500
    6. 1/64, 33,200
    B.
    There are many limits, one of which is that when an object is older the carbon-14 would be smaller
    C.
    Yes and no, yes because you can measure it by their half life. No because even though you know how many years an object is just through the half life of an isotope, it's not that accurate cause we're not entirely sure that that's the accurate date wherein it was formed

    - Daniel Stephen O. Villanueva

    ReplyDelete
  197. 4 , Mass Remaining : 1/16, Number of Years :22700
    5 , Mass Remaining : 1/32 , Number of Years : 28400
    6 , Mass Remaining : 1/94 , Number of Years : 34100
    John paul magana stem-sinai

    ReplyDelete
  198. A.)
    4.1/16 22,800
    5.1/32 28,500
    6.1/64 34,200

    B.)
    C-14 is highly unstable

    C.)
    No it is not. It is only based on an estimation ofusing the Carbon Dating metgod.

    ReplyDelete