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5 Written questions

5 Matching questions

  1. evaporation
  2. fresh
  3. filtering, adding chemicals like fluoride & chlorine
  4. air pressure
  5. currents
  1. a Two ways the most communities treat water before it comes into your home.
  2. b the changing of a liquid into a gas
  3. c Rivers, streams, and lakes are surface ___ water.
  4. d These carry warm water toward the poles.
  5. e When air moves upward to areas of less ___ ___, clouds often form.

5 Multiple choice questions

  1. This forms when water vapor on a surface freezes without first becoming liquid water.
  2. the top level of groundwater in an aquifer
  3. This forms when a large piece of ice breaks off a glacier or ice sheet.
  4. Groundwater that flows into the ocean does not involve ___ vapor.
  5. About 7/10 of Earth's ___ water is frozen into ice.

5 True/False questions

  1. salinityA liter of cold water with high ____ is heavier than a liter of warm water with low ____.


  2. reservoira lake formed behind a dam


  3. precipitationthe changing of a liquid into a gas


  4. salinityfrozen raindrops


  5. sublimationwhen ice turns into water vapor without first melting