Across
- 2. plates collide with eachother
- 3. plates move away from eachother
- 4. underwater mountains
- 7. narrow valley that forms where the plates seperate
- 8. explains why and how continents move
- 9. large areas of stable rock
- 14. continent breaks apart
- 16. pieces of lithosphere that has a unique geologic history
- 17. ocean lithosphere as magma rises and solidifies at a mid-ocean range
- 18. small coral mountains
- 19. solid plastic layer of the mantle
- 20. study of the magnetic properties of rocks
Down
- 1. supercontinent that formed over 300 million years ago
- 5. undersea mountain ranges
- 6. rocks within the cratons that have been exposed by Earth's surface
- 10. single large ocean that surrounded pangea
- 11. single landmass of all the continents
- 12. process in which a Terrance becomes part of a continent
- 13. solid outer layer of Earth's sphere
- 15. plates slide past eachother horizontally