Earth History
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8 terms
Terms | Definitions |
|---|---|
 Daughter Isotope | the stable isotope that results from radioactive decay |
| Half-life | the time needed for half of a sample of radioactive substance to undergo radioactive decay |
| Isotope | an atom that has the same number of protons as other atoms of the same element do but that has a different number of neutron |
| Parent Isotope | an atomic nucleus that is undergoing decay |
| Radioactive Dating | the process by which the age of a rock is determined by measuring the amount of radioactive isotopes present in the rock or rock sample |
| Radioactive decay | the process in which a radioactive isotope tends to break down into a stable isotope of the same element or another element |
| Radiometric dating | the method used for absolute dating |
| Relative dating | uses information about rock layers and the fossil record to determine the age relationships between rocks |
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