Across
- 4. when ocean floor is pushed below continental crust
- 5. what is used to prove something
- 6. all of Earth's plate motion put into one theory
- 7. a "mountain range" that rock comes out of from the mantle
- 9. the scientist who founded the idea of continental drift
- 14. rocks fall into the mantle and are then heated and part of the mantle
- 15. rocks closer to the mid ocean ridge are warmer/ cooler
- 16. rocks farther from the mid ocean ridge are denser/ less dense
- 19. a boundary when two plates ram into each other
- 20. the ocean continuously add new material to its floor
- 21. where Earth’s crust diverges on land
Down
- 1. breaks in Earth's crust where rocks slipped past each other
- 2. a boundary where two plates separate
- 3. rocks closer to the midocean ridge are denser/ less dense
- 8. Wegener's idea that the continents have moved
- 10. one of the types of evidence that Wegener used to prove the continents were together
- 11. a rock or animal that was preserved in rock
- 12. rocks further from the mid ocean ridge are warmer/ cooler
- 13. a boundary when two plates run along each other
- 17. an tool that uses sound waves and time to map the ocean floor
- 18. a supercontinent from around 300 million years ago