Across
- 4. a boundary when two plates run along each other
- 7. a boundary when two plates ram into each other
- 9. Wegener's idea that the continents have moved
- 10. a boundary where two plates separate
- 12. all of Earth's plate motion put into one theory
Down
- 1. when ocean floor is pushed below continental crust
- 2. where Earth’s crust diverges on land
- 3. a "mountain range" that rock comes out of from the mantle
- 5. the ocean continuously add new material to its floor
- 6. rocks fall into the mantle and are then heated and part of the mantle
- 8. a rock or animal that was preserved in rock
- 11. breaks in Earth's crust where rocks slipped past each other
- 12. a supercontinent from around 300 million years ago