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5 Written questions

5 Matching questions

  1. oxidation
  2. deposition
  3. loam
  4. subsoil
  5. soil
  1. a a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
  2. b Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
  3. c the loose, weathered material on Earth's surface in which plants can grow
  4. d process in which sediment is laid down in new locations
  5. e The layer of soil beneath the topsoil that contains mostly clay and other minerals.

5 Multiple choice questions

  1. Dark-colored organic material in soil.
  2. earth materials deposited by erosion
  3. The layer of soil that differs in color and texture from the layers above or below it.
  4. The breaking down of rocks and other materials on the Earth's surface.
  5. Soil organism that breaks down the remains of organisms and digests them.

5 True/False questions

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


  2. permeablecharacteristic of a material that is full of tiny, connected air spaces that water can seep through


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


  4. ice wedgingwedges of ice in rocks widen and deepen cracks


  5. litterthe loose layer of dead plant leaves and stems on the surface of the soil