Alfred wegener's save the world crossword

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Across
  1. 3. Formed at the pacific plate
  2. 6. Formed when two plates collide with each other.
  3. 9. Can form valleys
  4. 10. Moving away from each other
  5. 12. Move towards each other.
  6. 15. The theory for why the continents moved to their current position
  7. 18. Thought of a theory that all continents were together.
  8. 19. Where new ocean floor is made
  9. 20. formed with the sea floor
  10. 21. Shockwaves that cause mass destruction
Down
  1. 1. what some plates are made out of
  2. 2. Study of earthquakes
  3. 4. Smallest plate
  4. 5. like the one in California
  5. 7. when multiple land masses are together
  6. 8. biggest plate
  7. 11. Scrap past each other
  8. 13. Name for a supercontinent that was once on earth
  9. 14. Can be formed by magma
  10. 16. Things that are under the sea floor
  11. 17. When magma is out of a volcano
  12. 20. Things that spew lava and ash.