Across
- 4. An area where two plates are sliding past one another in opposite directions.
- 6. The hypothesis that the continents used to be together and drifted apart over time.
- 8. The deepest valleys in the ocean. (forms by subduction)
- 9. An area where two plates are colliding into one another.
- 10. The supercontinent that supports continental drift.
Down
- 1. The theory that suggests the Earth's crust is made up of multiple plates that cause changes to Earth's surface.
- 2. The sinking movement of oceanic crust back into the mantle.
- 3. A process that occurs when magma flows up through a crack in Earth's crust and hardens into new rock on both sides.
- 5. Long, underwater mountain ranges.
- 7. An area where two plates are moving away from each other.