Across
- 3. The scientist that discovered plate tectonics
- 4. The amount of Earth's life
- 8. The most common event while transforming
- 10. Earth's crust is split into these
- 11. The theory that the plates are moving constantly
- 14. The most common event during convergence
- 16. The area in the crust and part of mantle
- 17. The inner-most layer of the earth
- 18. When one land mass goes under another
Down
- 1. A scientist that studies rocks
- 2. The layer between the crust and outer core
- 5. The type of current that cause plates to move
- 6. When two plates go away from each other
- 7. The second hottest layer of the earth
- 9. valleys The most common event during divergence
- 10. A large supercontinent that was around 280 mil. years ago
- 11. When two plates collide and form mountains
- 12. When two plates slide past each other
- 13. The outermost layer of the earth
- 15. Mountain ridges where new seafloor is created by seafloor spreading