Across
- 4. the layer of soft, solid rock underneath Earth's plates
- 5. a sudden shaking of the Earth's surface
- 6. how often or fast something happens
- 7. to examine in detail for a purpose
- 9. a diagram that shows what the inside of something looks like
- 11. any of the many processes in which gas, lava and ash are pushed out on the surface of earth
- 12. Earth's outermost layer of hard, solid rock that is underneath the soil, vegetation, and water
- 14. something we observe to be similar over and over again
Down
- 1. the place where two plates meet
- 2. one of the very large sections of hard, solid rock that makes up Earth's outer layer
- 3. moving apart in a different direction
- 8. an underwater moutain range formed when two plates move apart
- 10. moving toward the same place
- 13. a long, deep indentation in the ocean floor formed when two plates move together