Plate Tectonics

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Across
  1. 2. huge wave in the ocean
  2. 3. flow/A cloud of ash, rock and gas exits from volcano
  3. 7. is sinking down into the earth
  4. 8. wave/A seismic wave.
  5. 9. rock that has erupted onto the earth's surface.
  6. 11. the point on the earth's surface directly above the focus of an earthquake.
  7. 13. rock
  8. 15. layer of plastic
  9. 17. striping/Patterns of magnetism
  10. 18. boundary/ where plates are moving apart from each other in opposite directions.
Down
  1. 1. break up
  2. 4. crust/ the crust that forms the ocean floor
  3. 5. boundary/Plates are sliding parallel
  4. 6. rapid movement of the ground usually back and forth.
  5. 10. place where there is extremely hot material.
  6. 12. spreading/The process of new crust forming at the ocean ridges.
  7. 14. boundary/Plates are colliding with each other
  8. 16. tectonics/the theory that the earth's crust is cracked into many large pieces.
  9. 19. arc/A chain of islands