Across
- 2. energy from the sun
- 7. how long it takes to form
- 9. breaking down of rock
- 11. frozen H2O
- 14. dropping of rock
- 15. the rock johnson
- 16. H2O
- 17. compression of rock
- 19. 79% nitrogen, 21.9% oxygen
Down
- 1. moving of rock
- 3. use plants for energy
- 4. most common sedimentary rock
- 5. energy from water
- 6. makes wind energy
- 8. liquid fossil fuel
- 10. energy from volcanic activity
- 12. solid fossil fuel
- 13. cementing of rock
- 18. gas fossil fuel