Across
- 1. process by which molten material adds new oceanic crust to the ocean floor
- 3. boundary were two plates move away from earth other
- 4. area were magma from deep within the mantle melts
- 7. under sea valley that represents one of the deepest parts of the ocean
- 9. measurement of an earthquake's strength
- 11. process by which oceanic crust sinks beneath a deep ocean trench
- 14. a break in Earth's crust along which rocks move
- 16. giant wave
- 18. boundary where two plates move past each other
- 19. hot solid material between earth's crust and core
Down
- 1. stress that pushes masses of rock in opposite directions
- 2. term used to describe a volcano that is likely not going to erupt again
- 5. boundary were two plates move toward each other
- 6. vibrations that travel through earth
- 8. shaking from the movement of rock beneath earth
- 10. molten mixture
- 12. term used to describe a volcano that is currently no active
- 13. stress that stretches rock
- 15. liquid magma that reaches the surface
- 17. layer of rock that forms Earth's outer surface