Movement of the Earth's crust by: Jeremiah Bridges

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Across
  1. 4. scale A scale that measures energy of an earthquake.
  2. 7. ridge The place plates of Earth's crust goes along the ocean floor.
  3. 8. The point in the Earth's crust.
  4. 10. boundary a boundary where plates past each other.
  5. 15. boundary A boundary where plates collide.
  6. 17. wave A primary wave or "push pull.
  7. 18. boundary A boundary where plates move away.
  8. 19. The outermost layer.
  9. 22. A mountain that may form around an opening.
Down
  1. 1. The point in the Earth's surface.
  2. 2. cone volcano A volcano build from ashes, cinder, rocks .
  3. 3. The cool solid portion of Earth.
  4. 5. The sudden movement of rock.
  5. 6. The innermost layer.
  6. 9. A zone of practically melted rock.
  7. 11. volcano The most powerful volcano of all.
  8. 12. spreading A process in which magma is slowly pushed.
  9. 13. tectonics the theory of the movement of plates.
  10. 14. Layer beneath the crust.
  11. 16. A deep ocean valley.
  12. 17. wave An energy wave from an earthquake.
  13. 20. wave A slower kind of energy wave.
  14. 21. volcano It looks like a warrior's shield.