Across
- 4. waves released when plate tectonics move
- 5. The area around the pacific plate with lots of volcanic activity
- 6. normal faults occur when rocks are
- 9. the force causing the continents to move
- 10. an ocean getting smaller because of subduction the process when old sea floor goes into the mantle from trenches and gets recycled
- 13. a boundary where the plates come together
- 15. liquid in the mantle
- 18. a boundary where the tectonic plates move away from each other
- 19. are like a mountain but sometimes magma will come out
Down
- 1. the process in which new ocean crust is created at mid-ocean ridges
- 2. is the name of the supercontinent that has over time come apart
- 3. the fault line under Missouri
- 7. Old ocean floor gets destroyed in
- 8. the one who first discovered the continental drift
- 11. The theory that the plates were once a large landmass that has moved to their current locations is known as
- 12. a movement of the earth-shaking
- 14. an ocean growing because of seafloor spreading
- 16. cause volcanos, mountains, and hills to form
- 17. a boundary where the plates rub against each other