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5 Written questions

5 Matching questions

  1. auroura borealis
  2. Less dense
  3. Carbon Dioxide
  4. aneroid barometer
  5. False
  1. a gas that makes up less than 1% of the atmosphere
  2. b True or False. You can see and smell all air pollution.
  3. c Warm air rises. Is this because warm air is more or less dense than cold air.
  4. d a colorful, glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in ithe ionosphere, also called Northern Lights
  5. e instrument used to measure changes in air pressure without using liquid

5 Multiple choice questions

  1. harmful substances in the air, water or soil
  2. The layer of gas that surrounds the earth.
  3. the middle layer of the earth's atmosphere: the layer in which most meteroids burn up.
  4. gas that makes up 78% of the atmosphere
  5. Do the molecules in warm air move faster or slower than molecules in cold air?

5 True/False questions

  1. stratosphereOzone in this layer IS a pollutant


  2. TemperatureThe main characteristic scientists use to determine the layers of the atmosphere.


  3. tropospherethe lower part of the thermosphere, where electrically charged paarticles called ions are found


  4. DecreasesAs you move up in the stratosphere, this happens to the temperature of the air


  5. Ultravioletgas that makes up 78% of the atmosphere


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