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Absolute Dating

Geologic Time Part 2

TermDefinition
Absolute Dating Using radioactive decay to determine the exact age of a rock, fossil, or event
Radioactive Decay The disintegration of an isotope over time
Isotopes Variations of an element that have the same atomic number but differing atomic masses
Half-Life The time required for half of a radioactive product to decay to a stable product
Half-Life Is Not Effected By By any environmental factors such as temperature, pressure, or chemical reactions
Uranium-238 One of the most important isotopes when dating rocks or events millions of years ago (Mass: 238 units Decay: uranium-238 -> lead-206 Half-Life: 4,500,000,000 years)
Carbon-14 One of the most important isotopes when dating organic remains within tens or thousands of years (Mass: 14 units Decay: carbon-14 -> nitrogen-14 Half-Life: 5,700 years)
Created by: cmbinder197
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