Across
- 3. the soil lying immediately under the topsoil
- 7. a loose granular material composed of finely divided rock and mineral particles
- 9. a chemical reaction that breaks a rock down
- 10. a granular material of a size between sand and clay and composed mostly of broken grains of quartz
- 11. loss of thin uniform layers of soil over a full field
- 15. channels or depressions that form in the same place year after year
- 16. soil is moving through the air
- 18. carbon-based compounds found within natural environments
- 19. the upper, outermost layer of soil
Down
- 1. channels or rills forming runoff, randomly located
- 2. large channels not able to be fixed by tilling of fields
- 4. erosion of the sides of a stream over time
- 5. breaking the rock down into smaller pieces
- 6. the original rock from which younger rock or soil is formed
- 8. the precipitation of salts in soils
- 9. a form of soil made up of very small particles of aluminum silicate, smaller than sand and silt.
- 12. the exertion of force on something so that it becomes more dense
- 13. small soil particles rolling or sliding while maintaining contact with the ground
- 14. the geological process in which earthen materials are worn away and transported by natural forces such as wind or water
- 17. grains of soil bouncing across the ground