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The Numeric Time Scale

Curated by ACT

This is a good source for getting an in-depth description of using radioactive decay to measure the ages of rocks. In addition to describing the process of radiometric dating, this resource also includes a geologic time scale and four examples of radioactive isotopes and their half-lifes.

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Classroom Considerations
  • Knovation Readability Score: 5 (1 low difficulty, 5 high difficulty)