Crossword Choice Board Row One

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Across
  1. 3. A more middle region in the earth
  2. 5. Number of species in one area
  3. 6. Weakness in the crust
  4. 7. Drives plate tectonics
  5. 8. Forms from erosion
  6. 11. Ancient supercontinent
  7. 13. The center region of earth
  8. 14. Upper region of earth
  9. 17. When Plates move towards each other
  10. 20. Depressions in the ocean
  11. 21. Pieces of moving earth
Down
  1. 1. When plates slide past each other
  2. 2. A slow, catastrophic event
  3. 4. Where molten rock is ejected
  4. 9. Rock formed by pressure
  5. 10. Rock formed by cooling
  6. 12. When Plates move away from each other
  7. 15. Records funny little waves
  8. 16. How new oceanic crust is formed
  9. 18. A quick, catastrophic event
  10. 19. Formed at plate boundaries