Across
- 4. Devices used to detect earthquakes
- 5. Forms over thin, weak points in the Earth's crust
- 6. The part of the Earth that the plates move on
- 8. The largest kind of volcanos, are flatter than your average volcano, and one is the Hawaiian islands
- 11. Driving force behind plate movement
- 15. The layer that makes up the tectonic plates
- 17. The build-up of pressure
- 19. The man who theorized the tectonic plate theory
- 20. Are used to study the interior of the Earth
- 22. Force of oceanic plate falling into the mantle is called _____
Down
- 1. Force behind the growth of the Atlantic Ocean.
- 2. The hottest part of the Earth
- 3. The last super continent to exist in Earth's history
- 7. Areas where one plate pushes under another
- 9. The most liquid part of Earth's interior
- 10. The scale used to measure earthquakes
- 12. The point direct above the focus of an Earthquake
- 13. Places where magma rises to the surface
- 14. The part of Earth with the largest volume
- 16. Young mountians created by continental-continental plate convergence
- 18. The depth of the _______ is a factor in earthquake damage
- 21. Varies from 10 km to 70 km in thickness