Across
- 2. Formed when two oceanic plates converge
- 4. Formed when continental plates spread apart
- 6. __________ magnitude scale
- 8. Driving force of continental drift
- 9. Underwater mountain chain along divergent plate boundary
- 12. The west coast of North America is made up of many ___________ terranes
- 15. Fault with vertical motion
- 16. Worldwide ocean
- 17. Discovered continental drift
- 18. Large wave created by an undersea earthquake
- 19. Break in the Earth's crust/lithosphere
- 20. Northern supercontinent
- 22. A plate boundary where plates are moving towards one another
- 25. A more horizontal fault found at convergent plate boundaries
- 27. New oceanic crust is formed during _________ spreading
Down
- 1. Process of one plate sinking beneath another
- 3. Instrument for measuring earthquakes
- 5. Ancient reptile that provided fossil evidence for continental drift
- 7. Fault with horizontal motion
- 10. 90% of the world's earthquakes are along the
- 11. Southern supercontinent
- 13. A plate boundary where plates are spreading apart
- 14. California's major fault
- 21. Fault usually found at convergent plate boundaries
- 23. Fault usually found at divergent plate boundaries
- 24. The point on the Earth's surface above an earthquake's location
- 26. Supercontinent (means "worldwide earth" in Greek)