Across
- 1. plates come together
- 4. huge wave from earthquake
- 6. adds more crust to ocean floor
- 8. layer of hot rock
- 10. valley deep valley from 2 plates moving apart
- 11. vibrations from an earthquake
- 15. deep valley along ocean floor
- 16. undersea mountain chain
- 17. breaks in earths crust
- 18. hypothesis on slow moving continents
- 20. heat transfer by movement of fluid
Down
- 2. shaking and trembling
- 3. molten mixture
- 5. tectonics slow constant moving
- 7. earths lithosphere pieces
- 9. earths outer surface
- 12. mountain that forms in earths crust
- 13. plates move apart
- 14. ocean floor sinks
- 19. slip past each other