Oceanography Crossword

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Across
  1. 3. What crust is broken into
  2. 5. If this happens in plates, quakes happen
  3. 6. Plate off the coast of South America
  4. 8. Plate off the coast of Central America
  5. 10. Where plates float
  6. 14. Mid Ocean ______
  7. 16. A boundary where two plates collide
  8. 17. Theory all continents were once together
  9. 18. East African ______
  10. 20. When one plate sinks under another
Down
  1. 1. A boundary where two plates spread apart
  2. 2. Pushes up to form new crust
  3. 4. Plates named after this part of earth
  4. 7. A form of crust found on land
  5. 9. A form of crust found in the ocean
  6. 11. A geological event that causes shaking
  7. 12. Steep areas deep in the ocean
  8. 13. Plate _______
  9. 15. Very large waves
  10. 19. San Andreas _______