Across
- 3. what every living thing needs
- 5. hottest planet
- 9. planet we live on
- 13. substance before it turns to lava
- 14. big mountain that spews out lava
- 15. substance formed after it leaves the volcano
- 17. happens during the daytime
- 19. first planet
- 20. shaking of the earth
Down
- 1. formed from extreme heat and pressure
- 2. the force pulling us down to earth
- 4. largest planet
- 6. the force keeping us from falling through the ground
- 7. made up from sediments
- 8. happens during the night time
- 10. the changing of rocks
- 11. bright ball of fire
- 12. formed from melting and cooling of lava
- 16. we live right by the San Andreas ______
- 18. coldest planet