Across
- 3. an extinct reptile
- 5. a hard rock on the outer layer of earth
- 7. that shows what the inside of something
- 9. a sudden shaking of Earth's surface
- 11. how often or fast something happens
- 12. moving in different directions
- 14. they layer under the plants and water
- 16. something that repeats over and over
- 17. evidence of life from the past
- 18. hot liquid rock below the surface of Earth
Down
- 1. moving towards the same place
- 2. something that shows something smaller
- 3. an underwater mountain range
- 4. the layer under the crust
- 6. earths land
- 8. the sudden pushing out of something
- 10. hot liquid rock on the surface of Earth
- 13. a spring that sends hot water and steam
- 15. forms on a planet