![]() ![]() The age of an ancient boat may be determined by comparing the radioactive decay of from living wood with that of wood taken from the ancient boat.Ī sample of 3.00 × l0 23 atoms of carbon is removed for investigation from a block of living wood. (b) Suggest why the method of carbon dating is likely to be unreliable if a sample is: (ii) A piece of wood taken from an axe handle found on an archaeological site has 0.375 times as many carbon-14 atoms as an equal mass of living wood.Ĭalculate the age of the axe handle in years. (i) The half-life of carbon-14 is 5740 years.Ĭalculate the radioactive decay constant in yr −1 of carbon-14. After a tree dies, the proportion of carbon-14 in it decreases due to radioactive decay. ![]() The carbon content of living trees includes a small proportion of carbon-14, which is a radioactive isotope. A Level and AS level - UK KS 5 (Age 16 - 18).GCSE and 'O' Level - UK KS4 (Age 14 - 16). ![]()
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