Geologist Ralph Harvey and historian Mott Greene explain the principles of radiometric dating and its application in determining the age of Earth.As the uranium in rocks decays, it emits subatomic particles and turns into lead at a constant rate.Or use it to upload your own Power Point slides so you can share them with your teachers, class, students, bosses, employees, customers, potential investors or the world.
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However, it is typically unknown and simply assumed whether these ratios of elements are the result of radioactive decay over time or other processes that have taken place in the rock.
Ages of Rocks in Millions of Years Sometimes different methods used on the same rock produce different ages.
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