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5 Written questions

5 Matching questions

  1. weathering
  2. acid rain
  3. ice wedging
  4. humus
  5. mass movement
  1. a rain containing high amounts of chemical pollutants.
  2. b Dark-colored organic material in soil.
  3. c wedges of ice in rocks widen and deepen cracks
  4. d any one of several processes by which gravity moves sediment downhill
  5. e The breaking down of rocks and other materials on the Earth's surface.

5 Multiple choice questions

  1. The layer of soil beneath the topsoil that contains mostly clay and other minerals.
  2. A measure of how well soil supports plant growth.
  3. the loose layer of dead plant leaves and stems on the surface of the soil
  4. Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
  5. process in which sediment is laid down in new locations

5 True/False questions

  1. oxidationthe grinding away of rock by other rock particles carried in water, ice, or wind


  2. decomposerThe removal of rock particles by wind, water, ice, or gravity


  3. sedimentThe solid layer of rock beneath the soil


  4. permeableearth materials deposited by erosion


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