Across
- 4. melted rock on the earths surface
- 6. the first layer of the earth
- 7. a plate boundary were two plates move toward each other
- 13. second layer of the earth
- 15. a plate boundary were they move away from each other
- 17. The place where a collision between two continental plates crunches and folds the rocks at
- 18. super continent
- 19. this happens when the plates move
- 20. upper mantel and lower crust
- 21. a scientific theory that explains how our continents were made
Down
- 1. when two plates slide past each other
- 2. biggest chain of underwater
- 3. the person who discovered plate tectonics
- 5. upper layer of the mantel
- 8. African plates are coming apart
- 9. currents in the mantel
- 10. this process is created by a divergent boundary
- 11. the process in which the crust breaks a part
- 12. boundary
- 14. a vent on the earths surface in which magma comes out of
- 16. when one plate tectonic dives under another plate