How Can a Half-Life Be Used to Tell the Age

question 49

Multiple Choice

How can a half-life be used to tell the age of a sample?

• A)The half-life of an isotope is constant.
• B)The amount of radioactive form depends on the amount of radiation in the surroundings.
• C)The ratio between the radioactive form and the stable form depends on the archaeological record.
• D)The ratio between the radioactive form and stable form varies regularly with time.
• E)both C and D

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