Across
- 5. changes composition
- 7. when rocks collide
- 8. threat is global climate change
- 10. flows downhill
- 11. movement of particles
- 12. part of cryosphere
- 14. when heating and cooling fluctuates
- 16. water freezes and expands
- 17. oxidation
Down
- 1. animals ________ once protected rocks
- 2. particles setting in an area
- 3. over 100 feet in elevation
- 4. physical breakdown of rock
- 5. reactions occur and break down rock
- 6. water surrounded by land
- 9. forms from glacial melting
- 13. formed by wind
- 15. causes rocks to break apart (plants)