Views of Earth's Past Vocabulary Review

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Across
  1. 2. Fossils that are the actual bodies or body parts of organisms
  2. 3. The age of an event or object in relation to other events or objects
  3. 4. The Era we are currently living in
  4. 7. The largest unit of time
  5. 8. The actual age of an event or object
  6. 10. A subdivision of an eon
  7. 11. Era during which the dinosaurs lived
  8. 14. Era during which all life lived in the oceans
  9. 16. Subdivision of an era
  10. 17. A subdivision of a period
Down
  1. 1. The divisions of earths history
  2. 5. The theory that earth is always changing and the same forces are always changing it
  3. 6. Scientist to proposed the theory that life is constantly changing
  4. 9. Traces or remains of living things from long ago
  5. 12. Fossils that were common, that lived in many areas, and only existed in certain periods of time
  6. 13. A tubular sample that shows the layers of snow and ice that have built up
  7. 15. The length of time it takes for half the atoms in a sample to change into a different form