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Posted by / 29-Jun-2019 07:04

Radiometric dating lab pennies

In the first two columns below transfer your data from the previous table starting with the 1st half-life. What relationship do you see between the number of half-lives which have passed and the exponent used to express the fraction of heads remaining using exponential form? If I asked you what fraction of an element would be left after 5 half-lives could you come up with the answer using the information you have gathered above? What does the letter “x” stand for in this equation (think about your answer to number 1 above)?INSERT TABLE HERE Formative Assessment - B Purpose: To demonstrate how using the half-lives of isotopes can use radiometric dating to find the age of a rock.Only half of the atoms of carbon-14 remaining after the first 5730 years will decay during the second 5730 years.Therefore, after two half-lives, one-fourth of the original carbon-14 atoms still remains.

Carbon-14 is a parent material, which decays to its daughter material, nitrogen-14.

To understand this, you must first understand radioactivity and decay.

When an element undergoes radioactive decay, it creates radiation and turns into some other element.

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By measuring the amount of carbon-14 remaining, the age of the fossil can be determined.