Carbon-14(14C) Dating Assumes That the Carbon on the Earth Today

question 63

Multiple Choice

Carbon-14(14C) dating assumes that the carbon on the Earth today has the same radioactive content as it did centuries ago. If this is true, then the amount of 14C absorbed by a tree that grew several centuries ago should be the same as the amount of 14C absorbed by a similar tree today. A piece of ancient charcoal contains only 18% as much of the radioactive carbon as a piece of modern charcoal. How long ago was the tree burned to make the ancient charcoal? (The half-life of 14C is 5715 years.) Round your answer to the nearest integer.

• A)2,310 years
• B)33,123 years
• C)2,315 years
• D)14,139 years
• E)14,144 years

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Definitions:

Guilt

A negative emotional state associated with anxiety, tension, and agitation.

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An indistinct or unclear perception or understanding of something, often leaving one uncertain.

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Emotions that are a blend of primary emotions and include feelings such as guilt, shame, embarrassment, and pride.

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A temporary state of mind or feeling that can influence perception and behavior.