weathering

2. the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.
5. the process of wearing or being worn by long exposure to the atmosphere
9. a process in which large flat or curved sheets of rock fracture and are detached from the outcrop due to pressure release
10. the laying down of sediment carried by wind, flowing water, the sea or ice
11. occurs when runoff water forms small channels as it concentrates down a slope
12. is the breaking down of rocks where they are located, caused by rainwater, temperature extremes and biological processes.
13. the interaction of rock with mineral solutions to change the composition of rocks
15. a distinct layer of soil, approximately parallel with the land surface, whose properties develop from the combined actions of living organisms and percolating water.

1. occurs when oxygen combines with another substance and creates compounds called oxides.
3. those materials that have been moved from their place of origin, by gravity, wind, water, glaciers, or human activity
4. a vertical section of soil
6. the removal of soil along drainage lines by surface water runoff
7. splitting or break-up of rock by the pressure of water freezing in cracks
8. a soil material which is the result of weathering and decomposition of rocks that have not been transported from its original place.
14. When the smaller rock pieces are moved by these natural forces