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5 Written questions

5 Matching questions

  1. decomposer
  2. deposition
  3. humus
  4. permeable
  5. mass movement
  1. a Dark-colored organic material in soil.
  2. b characteristic of a material that is full of tiny, connected air spaces that water can seep through
  3. c process in which sediment is laid down in new locations
  4. d any one of several processes by which gravity moves sediment downhill
  5. e Soil organism that breaks down the remains of organisms and digests them.

5 Multiple choice questions

  1. The layer of soil beneath the topsoil that contains mostly clay and other minerals.
  2. a chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust
  3. A measure of how well soil supports plant growth.
  4. The layer of soil that differs in color and texture from the layers above or below it.
  5. earth materials deposited by erosion

5 True/False questions

  1. topsoilThe layer of soil beneath the topsoil that contains mostly clay and other minerals.

          

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

          

  3. weatheringThe breaking down of rocks and other materials on the Earth's surface.

          

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

          

  5. acid rainrain containing high amounts of chemical pollutants.

          

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