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5 Written Questions

5 Matching Questions

  1. decomposer
  2. abrasion
  3. bedrock
  4. oxidation
  5. permeable
  1. a The solid layer of rock beneath the soil
  2. b the grinding away of rock by other rock particles carried in water, ice, or wind
  3. c Soil organism that breaks down the remains of organisms and digests them.
  4. d characteristic of a material that is full of tiny, connected air spaces that water can seep through
  5. e a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust

5 Multiple Choice Questions

  1. wedges of ice in rocks widen and deepen cracks
  2. A measure of how well soil supports plant growth.
  3. earth materials deposited by erosion
  4. any one of several processes by which gravity moves sediment downhill
  5. The layer of soil beneath the topsoil that contains mostly clay and other minerals.

5 True/False Questions

  1. soilRich, fertile soil that is made up of about equal parts of clay, sand, and silt.


  2. weatheringthe loose layer of dead plant leaves and stems on the surface of the soil


  3. erosionThe removal of rock particles by wind, water, ice, or gravity


  4. depositionprocess in which sediment is laid down in new locations


  5. topsoilMixture of humus, clay, and other minerals that forms the crumbly, topmost layer of soil.


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