Carbon dating questions answers

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The ratio of the parent to daughter atoms can be used to determine an exact age given the assumptions that none of the original parent atoms have been eroded or lost during the time being calculated. Con All radioactive dating except Carbon 14 are based on atoms found in igneous rocks.

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Fossils are almost never found in igneous rocks. So radioactive dating can not be used to directly date fossils. The one exception is Carbon However Carbon 14 has a relatively short half life so it cannot be used on fossils much older than 50, years which makes it useful for anthropology but not geo history.

Carbon Dating Questions

Also most fossils no longer contain Carbon they have been turned to stone. Radioactive dating gives hope for an objective empirical method of determining the age of fossils.

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  • We cannot use the technique on fossils that are millions of years old. The limitation to atmospheric carbon We cannot use carbon dating for most aquatic organisms or animals that consume these organisms, because they often obtain at least some of their carbon from dissolved carbonates in rock.

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    Related questions How can you simulate radioactive half-life? How does radioactive decay relate to half-life? What is the radioactive half-life of carbon 14? Why is radioactive half-life important? What is the half-life of Uranium? How can we use the half-life of Carbon to date things?

    How accurate are Carbon and other radioactive dating methods? •

    How much material will be left if a radioactive isotope has a half life of 1. What is the half life of Uranium ? At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues. When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon Experts can compare the ratio of carbon 12 to carbon 14 in dead material to the ratio when the organism was alive to estimate the date of its death.

    Carbon 14 Dating Problems - Nuclear Chemistry & Radioactive Decay

    Radiocarbon dating can be used on samples of bone, cloth, wood and plant fibers. The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay. In the case of radiocarbon dating, the half-life of carbon 14 is 5, years.

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