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5 Written questions

5 Matching questions

  1. permeable
  2. sediment
  3. soil horizon
  4. subsoil
  5. fertility
  1. a earth materials deposited by erosion
  2. b The layer of soil that differs in color and texture from the layers above or below it.
  3. c The layer of soil beneath the topsoil that contains mostly clay and other minerals.
  4. d characteristic of a material that is full of tiny, connected air spaces that water can seep through
  5. e A measure of how well soil supports plant growth.

5 Multiple choice questions

  1. The solid layer of rock beneath the soil
  2. The breaking down of rocks and other materials on the Earth's surface.
  3. process in which sediment is laid down in new locations
  4. any one of several processes by which gravity moves sediment downhill
  5. rain containing high amounts of chemical pollutants.

5 True/False questions

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


  2. soilthe loose, weathered material on Earth's surface in which plants can grow


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


  4. humusDark-colored organic material in soil.


  5. oxidationa chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust