Across
- 4. ,formed when Earth's plates collide
- 5. ,liquid inner layer of the Earth
- 7. ,the place where the waves hit the surface, directly over the focus
- 8. ,the movement of Earth caused by the sudden release of energy
- 11. ,waves that move back and forth
- 12. ,the solid inner layer of the Earth
- 14. ,the process that causes new ocean crusts
- 15. ,waves that bounce up and down
- 16. ,formed when large sections of the crust are faulted and uplifted
- 18. ,forms when one plate gets pushed under another plate
- 20. ,a theory of how the plates move
Down
- 1. ,moving because they rest on plasticlike layers within the mantle
- 2. ,magma when it erupts through an opening or vent of the Earth's surface
- 3. ,the cycle in which hot magma of forced up and cools
- 6. ,formed when Earth's crust is stretched and pushed up by forces
- 9. ,in the Earth's crust where plates rub against each other build energy that releases waves
- 10. ,the exact spot inside the Earth where an earthquake starts
- 13. ,melted rock
- 17. ,the movement of continents
- 19. ,the thickest layer of the Earth