The technique called radiometric dating is based on
A)the steady, clocklike decay of certain radioactive isotopes over time.
B)the assumption that radioactive isotopes accumulate in fossils at a constant rate.
C)the formation of radioactive molecules in rocks after they are laid down.
D)the use of fossils of known age to determine how fast carbon-14 decays.

Question

Quizplus · Accepted Answer

Radiometric dating is based on the steady, clocklike decay of certain radioactive isotopes over time. By measuring the relative amounts of these isotopes (such as carbon-14 or uranium), scientists can determine the age of rocks and fossils. The rate of decay is constant, which allows for accurate dating.

The Technique Called Radiometric Dating Is Based on