Plate Tectonics

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Across
  1. 5. the earth's motion into a single theory
  2. 6. mountains under water
  3. 8. separating of the plates
  4. 10. wegeners idea that the continents move is called
  5. 11. supercontinent
  6. 12. force pressing on something
  7. 14. when somthing goes back into the mantle
  8. 17. the last layer in our earth
  9. 18. a device that shows us down far below the ocean
  10. 19. a dark fined grained rock
Down
  1. 1. colliding of the plates
  2. 2. breaks in earths crust
  3. 3. any trace of anything ancient
  4. 4. when the oceanic crust bends down
  5. 7. a deep valley
  6. 9. generates earthquakes
  7. 12. the pieces called what?
  8. 13. a part of the earths inner
  9. 15. outer skin of the earth
  10. 16. a rock that is normally light colored