Carbon-14 Has a Half-Life of 5730 Years

question 24

Multiple Choice

Carbon-14 has a half-life of 5730 years. A sample of wood has been recovered by an archaeologist. The sample is sent to a laboratory, where it is determined that the activity of the sample is 0.144 Bq/g. By comparing this activity with the activity of living organic matter, 0.230 Bq/g, the scientist determines how old the wood sample is, or more precisely, when the tree that the sample came from died. How old is the sample of wood?

• A) 3870 years
• B) 4250 years
• C) 4590 years
• D) 2630 years
• E) 2940 years

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