CH 12-Weathering, Erosion, & Soils

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Across
  1. 1. from a young-earth point of view, it is unlikely that any of the original created soils remained after the ___
  2. 7. the upward thrust of rocks and boulders through water freezing below the grounds surface
  3. 8. loess deposits are thought to have been formed by the action of ___
  4. 9. some glaciers can be found near the Equator, but only in ___ mountains
  5. 13. carbon dioxide and water are often involved in ___ weathering
  6. 14. the Old Testament sabbath principle of leaving fields ___ for 1 year out of 7 aided in fertility of farms
  7. 16. most of the sediment load in a stream is carried as ___ sediment
  8. 18. a soil scientist
  9. 19. the slow movement of land surface that may cause fence posts to lean
  10. 21. long, streamlined hills composed of unsorted glacial till
  11. 23. occurs when water enters a crack in a rock, expands as it freezes, and cracks the rock
  12. 24. this plays an important role in mechanical and chemical weathering
  13. 26. the strip of till that separates two glacial valleys is a ___ moraine
  14. 27. formed when water chemically combines with carbon dioxide
  15. 29. any fertile soil must contain ___ material
  16. 30. the well-mixed combination of rocks, pebbles, sand, and silt carried by glaciers
  17. 32. the process in which layers of rock flake off to form rounded boulders
  18. 33. the general term for all downhill movement of rocks and soil due to gravity
Down
  1. 2. the rapid movement of a large mass of earth materials down a steep slope
  2. 3. a hill or ridge of windblown sand
  3. 4. when feldspar reacts with carbonic acid ___ is formed
  4. 5. strip cropping, wind breaks, and flood control dam projects are all methods used for ___
  5. 6. a layer of soil resulting from the weathering of bedrock
  6. 10. plucking is a type of erosion caused by ___
  7. 11. this time of climate is the most favorable for chemical weathering
  8. 12. the quantity of sediment that a stream carries
  9. 13. when a weathered rock is split open, you can often tell the amount of weathering by differences in ___
  10. 15. the chemical balance of soils in rainy climates tend to be ___
  11. 17. a triangular-shaped area of fertile deposits found where a large river enters the ocean
  12. 20. alluvial fans and river deltas are examples of ___ by streams
  13. 22. valuable topsoil containing equal parts sand and silt with about half as much clay
  14. 25. deflation is to desert pavement as ___ is to ventifacts
  15. 28. a bowl-shaped depression caused by strong winds carrying away all the loose materials from an area
  16. 31. a type of mass wasting that moves quickly, but slips just a short distance