Plate tectonic

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Across
  1. 3. The area where two tectonic plates meet
  2. 6. the process by which Earth's crust breaks apart
  3. 8. occurs at the mid ocean ridges
  4. 9. the physical layer of Earth made of solid rock and soil
  5. 13. this in the mantle causes plates to move
  6. 15. The most outer solid portion of the planet Earth
  7. 16. type of plate boundary where two plates separate or move apart
  8. 18. When Two Continental plates collide and create
  9. 19. The boundary where two plates collide
  10. 20. crack or when the surface along rocks break
Down
  1. 1. credited with the theory of Continental Drift
  2. 2. Type of crust that is thinner and contains basalt.
  3. 4. The layer just below the lithosphere
  4. 5. Supercontinent that existed 250 million years ago
  5. 7. The deepest parts of the oceans.
  6. 10. these are associated with transform boundaries
  7. 11. layer of the Earth that is liquid
  8. 12. Earths thickest layer
  9. 14. When one tectonic plate moves underneath another one
  10. 17. The boundary where two plates slide past one another