Across
- 5. an extinct reptile
- 7. earth's outermost layer of hard, solid rock
- 10. a large section of hard solid rock
- 11. a long deep indentation in the ocean floor formed
- 13. evidence of life from the past
- 14. the layer of soft, solid rock underneath the plates
- 15. moving apart in different directions
- 17. to examine in detail
- 19. where two plates meet
Down
- 1. when 2 plates move together
- 2. shows the inside of something
- 3. something we observe over and over again
- 4. hot liquid rock on the surface of Earth
- 6. a sudden shaking of Earth's surface
- 8. an underwater mountain
- 9. feature that forms on the surface of a planet such as a mountain
- 12. any of earth's main continuous areas of land
- 16. how often or fast something happens
- 18. hot liquid rock below the surface of the Earth