Absolute Dating & Radioactive Decay Quiz
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Last updated 5:59 PM on 12/14/25
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7 Terms
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Isotope
Atoms of the same element with the same number of protons but different numbers of neutrons.
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Absolute age
The actual age of a rock, fossil, or event measured in years.
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Radioactive isotope
An unstable isotope that changes into another element over time.
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Radioactive decay
The natural process by which an unstable isotope changes into a more stable one.
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Parent isotope
The original radioactive element.
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Daughter (decay) product
The stable element formed after radioactive decay.
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Half-life
The time it takes for half of the parent isotope in a sample to decay.
Note 
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