Plate Tectonic Crossword Puzzle

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Across
  1. 4. moving
  2. 9. up and down
  3. 10. space between
  4. 13. trench
  5. 14. drift
  6. 15. coming up
  7. 16. space and down
  8. 17. of the plates
Down
  1. 1. history
  2. 2. ridge
  3. 3. plates under earth
  4. 5. plate
  5. 6. caused by earthquakes
  6. 7. earth shaking
  7. 8. used to study shifting of plates
  8. 11. move in
  9. 12. of earth
  10. 15. and right