Across
- 5. an extinct reptile
- 7. a feature that forms on the surface of a planet
- 9. boundary the place where two plates meet
- 11. something we observe to be similar
- 12. moving toward each other
- 13. layer Earths layer of hard solid rock
- 15. the layer of soft solid rock
- 16. the outside layer of something
- 17. the sudden pushing of something
- 18. natural spring
Down
- 1. inside of an object
- 2. an object, diagram, or computer program that helps us understand something
- 3. evidence from the past
- 4. any of earth’s continuous areas of land
- 5. Hot liquid rock
- 6. underwater mountain range
- 8. moving away from each other
- 10. shaking of earths surface
- 11. large section of hard solid rock
- 14. how often or fast something happens
- 19. the slow pulling apart of land