Earth Science Ch 12 Weathering, Erosion, and Soils

Edit Answers
123456789101112131415161718192021222324252627
Across
  1. 1. A scientist who studies soil, soil formation, and erosion.
  2. 5. Any method used to prevent soil erosion.
  3. 11. The process by which wind-driven sand erodes exposed rock.
  4. 12. The process by which factors or conditions in the environment break rocks down into smaller pieces.
  5. 17. Sediments deposited by a glacier.
  6. 19. A relatively uniform layer of soil.
  7. 20. A broad, level area surrounding a low-gradient river created by regular flooding of the river.
  8. 21. The rapid downward movement of earth material.
  9. 23. Chemical changes that dissolve rocks or break them down into smaller pieces.
  10. 26. The study of soils, including their formation, composition, and alteration.
  11. 27. The action of wind over a large area to remove small clastic particles, leaving behind cobbles and larger rocks that form desert pavement.
Down
  1. 2. A build up of fertile land formed where a stream enters a larger body of water, and the water’s speed slows to a near standstill.
  2. 3. The process of bringing underground rocks to the ground surface where they weather faster; due to frozen groundwater freezing and expanding.
  3. 4. A mechanical weathering process in which water trapped in cracks and pores of rock freezes and expands, creating fragments of rocks.
  4. 6. The process in which solid particles drop from a moving fluid to the bottom of the fluid, usually when flow rate is decreased.
  5. 7. A mechanical weathering process in which changes in temperature or the removal of the weight of overlying rock breaks down thin layers or slabs of rock.
  6. 8. The process by which the actions of plants, animals, and other organisms break down rocks.
  7. 9. Layers of eroded earth materials and organic matter (humus) on the earth’s surface.
  8. 10. The process by which gravity transports rocks and soil downhill.
  9. 13. Decayed organic matter in the soil’s A-horizon that holds water and gives plants nutrients.
  10. 14. An especially fertile topsoil containing about 40% sand, 40% silt, and 20% clay, often contains humus.
  11. 15. A sedimentary ridge or surface formed by glacial till after a glacier melts or retreats.
  12. 16. A large mass of dense, compacted snow and ice that flows downhill under the influence of gravity.
  13. 18. The physical process that breaks down rock into smaller pieces without changing its chemical composition.
  14. 22. A depositional landform that results from wind-deposited sand and soil.
  15. 24. A thick deposit of fine, windblown dust and silt that provides an excellent base for rich soil.
  16. 25. The process of wearing away rock and transporting sediments.