Plate Tectonics Crossword Puzzle

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Across
  1. 4. Caused by earthquake activity in ocean crust
  2. 7. form at convergent boundaries
  3. 8. theory that the plates were one landmass
  4. 15. Fault Name of the fault in Missouri
  5. 16. where sea floor spreading begins
  6. 17. this is shrinking
  7. 18. Hawaii Islands formed over this
Down
  1. 1. is the process occurring in the mantle that is the driving force behind plate tectonics
  2. 2. where plates collide
  3. 3. Common at a transform boundary
  4. 5. where plates slide past each other
  5. 6. known for its volcanic activity around the pacific plate
  6. 9. where sea floor spreading ends
  7. 10. where rocks squeeze together
  8. 11. break in earth's crust
  9. 12. where plates spread apart
  10. 13. where rocks slide past each other
  11. 14. where rocks spread apart
  12. 17. name of giant super continent