Geologic Time Scale.

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Across
  1. 1. The job dealing with rocks
  2. 3. Amount of time it takes to half
  3. 5. Cuts across, younger then the rock
  4. 7. The method that uses fossil dating laws
  5. 9. The method of radioactive dating
  6. 10. Preserved remnants of the past
Down
  1. 2. Youngest top, oldest bottom
  2. 4. In the rock = older
  3. 6. The optimal fossils for relative dating
  4. 8. The chemical used for absolute dating