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5 Written questions

5 Matching questions

  1. erosion
  2. phytoplankton
  3. primary treatement
  4. well
  5. nonpoint-source pollution
  1. a abnormally high concentrations, microscopic plants
  2. b human-made hole that is deeper that the level of the water table
  3. c pollution that comes from many sources rather than from a single, specific site
  4. d dirty water is passed through a large screen to catch solid objects, such as paper, rags, and bottle caps
  5. e the process by which wind, water, ice or gravity transports soil and sediment from one location to another

5 Multiple choice questions

  1. minerals are sometimes deposited at places in a river where the current slows down
  2. the downward movement of water through pores and other spaces in soil due to gravity
  3. ability of a rock or sediment to let fluids pass through its open spaces, or pores
  4. process in which material is laid down
  5. amount of water that a stream or river carries in a given amount of time

5 True/False questions

  1. stalagmitessharp, icicle-shaped features that form on cave ceilings


  2. floodpainmaterials carried by a stream


  3. dissolved exygenoxygen dissolved in water


  4. gradientmeasure of the change in elevation over a certain distance


  5. evaporationtakes place when water from the oceans and earth's surface changes into water vapor


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