Earth Science Chapter 12 Review

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Across
  1. 4. as water freezes, it expands causing rock materials apart
  2. 9. thick, fine-grained strata produced by strong global winds
  3. 12. process of forming desert pavements by wind erosion of loose sediments from flat, dry terrain
  4. 14. a type of acid commonly involved in weathering
  5. 16. fertile land built up in a body of water at a place where a stream enters
  6. 18. large depressions left when glacial chunks are buried then melt
  7. 20. rapid mass wasting
  8. 23. as groundwater freezes below buried rocks, it expands forcing the rocks upward
  9. 25. type of weathering which breaks down rocks through changes in the rocks' compositions
  10. 28. ridges of till
  11. 29. gravity, water, wind, and glaciers are important ? of erosion and deposition
  12. 32. similar to sandblasting; may form ventifacts
  13. 33. type of sediments which form the majority of a stream's load
  14. 34. section of earth slips only a short distance downhill
  15. 35. slender spires formed when glaciers erode both sides of mountain peaks
  16. 36. thin layers of sediment deposited into lakes by glacial meltwater
  17. 37. contains about equal parts of sand, silt, and about half as much clay
  18. 38. slow process of rock and soil moving over a lower rock layer
  19. 39. piles of broken rock at the based of cliffs due to exfoliation
Down
  1. 1. processes which make rocks separate into thin layers; may produce rounded outcroppings
  2. 2. reducing soil erosion
  3. 3. type of glacier which forms when several valley glaciers merge at the base of a mountain range
  4. 5. the more ? the water flow, the more sediment the water can carry
  5. 6. forms when carbon dioxide in the air dissolves in water
  6. 7. begins the basic order for rocks breaking down to form soils
  7. 8. a large mass of dense ice that flows due to gravity
  8. 10. wind carries away loose surface materials, leaving an empty basin-shaped area
  9. 11. type of weathering caused by the action of plants and animals on rocks
  10. 13. process which can cause a glacier to break up bedrock
  11. 15. type of weathering that uses any physical forces to break down rocks from large rocks to small rocks
  12. 17. caused by an intermittent stream emptying into a flat desert
  13. 19. long winding moraines
  14. 21. when glaciers move in rapid spurts
  15. 22. large amounts of rocks and soil move due to gravity
  16. 24. soil layers
  17. 26. A-horizon; contains humus
  18. 27. formed when sea water enters a glaciated valley
  19. 30. type of soil deposited on top of native bedrocks by water or wind
  20. 31. shape of a valley after a glacier moves through it
  21. 35. decayed organic matter