Across
- 3. outer most solid shell
- 4. highly active divergent boundaries
- 6. continental rift and mid-ocean rift
- 7. super continent
- 9. lave erupted
- 13. study of magnetic field frozen within rocks
- 15. right lateral fault
- 17. high sea wave
- 18. believed continents were all together once
- 20. map of ocean floor
Down
- 1. two or more plates move toward one another
- 2. when a dense oceanic plate meets a more buoyant one
- 5. lots of fault zones over a wide area
- 8. when subducting plate becomes liquid magma
- 10. plates slide past horizontally to each other
- 11. left lateral fault
- 12. solid bulk of Earth's crust
- 14. first scientist to put it together
- 16. solid rock that moves
- 19. proposed sea floor was spreading