Across
- 4. When gets hotter contracts
- 5. when a rock gets eroded by weather
- 6. Its porous if it is this
- 12. It is ......... If it doesn't let water in
- 13. a rain that can destroy rocks
- 14. when something gets smaller
Down
- 1. A natural weathering
- 2. A natural weathearing
- 3. where onionskin could happen
- 7. it's not porous if it's this
- 8. A rock affected by acid rain grealy
- 9. when something gets bigger
- 10. It is ...... If it lets water in it
- 11. chemical formula for acid rain