Earth Science

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Across
  1. 3. The supercontinent that broke apart over million of years
  2. 5. Compositional layer made up of the inner and outer core
  3. 8. happens at mid-ocean ridges
  4. 9. divide
  5. 12. happens at convergent boundaries
  6. 15. The Earth feature found on the ocean floor at divergent boundaries
  7. 16. happened at the end of eons when all of a species died
  8. 17. A physical layer of the mantle
  9. 22. Earth's broken crust
  10. 23. discovered by Harry Hess and proves that continents spread apart over time
  11. 24. The process by which new lithosphere is created
  12. 26. Molten rock in the mantle
Down
  1. 1. core Made of solid iron
  2. 2. scientist who proposed the Continental Drift Theory
  3. 4. The uppermost plastic layer of the mantle
  4. 6. The compositional layer that includes the lithosphere and asthenosphere
  5. 7. Occurs when denser oceanic lithosphere slides under continental lithosphere
  6. 10. A unit of geologic time in which eras are divided
  7. 11. happens when hot Earth material rises and cools in Earth's mantle
  8. 13. The layer of Earth on which we live
  9. 14. Collide
  10. 18. The largest division of geologic time
  11. 19. The place where plates meet
  12. 20. A subdivision of a geologic period
  13. 21. slide
  14. 25. A unit of geologic time that includes two or more periods