Marine Science Unit 2

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Across
  1. 2. less dense, thicker
  2. 6. two plates sliding past each other
  3. 7. bacteria with no nucleus
  4. 11. as new plate movement forms, it pushes the plates
  5. 12. heat from the center of the Earth rises, cools, then falls and moves the plates
  6. 13. broke apart into smaller continents
  7. 14. All continents once joined together as one super continent
  8. 16. oceanic plate goes under the other
  9. 17. Where the sea floor is elevated
  10. 18. Ocean that is getting smaller
  11. 19. Changes Coastlines
Down
  1. 1. two plates moving away from each other
  2. 3. Plates of different densities coverage, the higher density plate is pushed
  3. 4. A molten sphere
  4. 5. as dense ocean plates sink, they pull the plate down
  5. 8. oceanic plate is pushed down into a subduction zone that reaches to the mantle
  6. 9. more dense, thinner
  7. 10. Coverage without subduction occurring
  8. 11. slabs of rock that sink between where the plates are moving apart
  9. 15. Ocean that is getting bigger