Across
- 3. materials are dropped in another location
- 4. measures the acidity of soil
- 8. rocks and minerals are broken down into smaller pieces
- 13. soil that is formed above the original bedrock
- 15. agent of erosion that naturally pulls materials downward
- 16. removal of weathered rock and soil from its original location
- 19. the weak acid that forms when water and carbon dioxide combine in the atmosphere
- 20. erosion by water is most likely to occur during this season
Down
- 1. a nonrenewable resource that is a common cause of acid precipitation
- 2. type of rock that carbonic acid can dissolve
- 4. another term for mechanical weathering
- 5. the cyclic freezing and thawing of water that creates large cracks in rock
- 6. type of weathering that changes the composition of the rocks
- 7. rock type that weathers the easiest
- 9. successive layers of rock are stripped away
- 10. planted in the Northern Plains to protect crops from wind erosion
- 11. formed when running water slows down when it reaches a large body of water and deposits large amounts of sediment
- 12. organic material in soil
- 14. the chemical reaction of oxygen and other substances
- 17. running water cuts small channels into the side of a slope
- 18. type of climate that accelerates chemical weathering