Across
- 2. an underwater mountain range formed when two plates move apart
- 4. a sudden shaking of Earths surface
- 8. a feature that forms on the surface of a planet such as a mountain, channel, or sand dune
- 9. evidence of life from the past
- 11. moving away from each other
- 14. the sudden pushing out of something
- 15. the inside of something
- 16. the place where two plates meets
- 18. hot liquid rock below the surface of Earth
- 19. how often or fast something happens
Down
- 1. hot liquid rock on the surface of Earth
- 3. a natural spring that sends hot water and steam suddenly into the air from a hole in the ground
- 5. an extinct reptile that lived about 300 million years ago
- 6. any of earths continuous areas of land
- 7. moving toward the same place
- 10. one of the very large sections of hard solid rock that make up Earths outer layer
- 12. the layer of soft, solid rock underneath Earths plates
- 13. an object,diagram,or computer program that helps us understand something by making it simpler to use or easier to see
- 16. something we observe to similar over and over again
- 17. earths most outer most layer
