Across
- 4. those materials that have been moved from their place of origin, by gravity, wind, water, glaciers, or human activity
- 5. a soil material which is the result of weathering and decomposition of rocks that has not been transported from its original place.
- 7. a vertical succession of horizons
- 8. a layer parallel to the soil surface whose physical, chemical and biological characteristics differ from the layers above and beneath.
- 10. involves the repeated freezing and thawing of water in areas with extremely cold weather.
- 13. A chemical reaction that takes place when a substance comes into contact with oxygen
- 14. the process of wearing or being worn by long exposure to the atmosphere.
- 15. changes the molecular structure of rocks and soil
Down
- 1. occurs when runoff water forms small channels as it concentrates down a slope.
- 2. causes rocks to crumble
- 3. the removal of soil along drainage lines by surface water runoff.
- 6. the laying down of sediment carried by wind, flowing water, the sea or ice.
- 9. The upper layer of earth in which plants grow,
- 11. curved plates of rock are stripped from rock below.
- 12. process in which earthen materials are worn away and transported by natural forces such as wind or water.