The Atmosphere: Section 1

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littleg.ward
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197848
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The Atmosphere: Section 1
Updated:
2013-02-04 12:38:23
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science atmosphere layers
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Section one of the chapter on the Earth's atmosphere. Deals with description and names of layers.
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  1. _____ - thin layer of air that protects the Earth's surface from extreme temperatures and harmful Sun rays.
    ATMOSPHERE
  2. Atmospheric makeup - mixture of gases, _____, and liquids.
    SOLIDS
  3. Early atmosphere was much different than today.

    Volcanoes produced nitrogen and carbon dioxide, but little _____.
    OXYGEN
  4. Early atmosphere was much different than today.

    More than 2 billion years ago, _____ _____ began producing oxygen.
    SIMPLE ORGANISMS
  5. Early atmosphere was much different than today.

    Eventually oxygen formed an _____ layer that protected Earth from harmful rays.
    OZONE
  6. Early atmosphere was much different than today.

    _____ plants and diverse life forms developed.
    GREEN
  7. Atmospheric _____ include nitrogen (78%), oxygen (21%), carbon dioxide, water vapor, and argon.
    GASES
  8. The atmosphere is changing with the introduction of _____:  increasing human energy use is increasing the amount of _____ _____.
    POLLUTANTS, CARBON DIOXIDE
  9. _____ mix with oxygen and other chemicals to form _____.
    POLLUTANTS, SMOG
  10. _____ include dust, salt, and pollen.
    SOLIDS
  11. _____ include water droplets and droplets from volcanoes.
    LIQUIDS
  12. There are _____ main layers of the atmosphere.
    FIVE
  13. Lower Layers

    Lowest layer, where humans live, is the _____, which extends about 10 km up, and contains most of the _____ _____ and _____.
    TROPOSPHERE, WATER VAPOR, GASES
  14. Lower Layers

    Extending from 10 km to 50 km above Earth, the _____ contains ozone.
    STRATOSPHERE
  15. Upper Layers

    _____, which has the coldest air temperature, extends from 50 km to 85 km and is the layer in which meteors are visible.
    MESOSPHERE
  16. Upper Layers

    Thickest part of atmosphere is from 85 km to 500 km and is called the _____ for its high temperatures.
    THERMOSPHERE
  17. Upper Layers

    Within the mesosphere and thermosphere is a layer of charged particles called the _____ that can help carry radio waves.
    IONOSPHERE
  18. Upper Layers

    _____ is the outer layer of atmosphere in which the space shuttle flies;  it has very few molecules.
    EXOSPHERE
  19. _____ _____ - molecules closer to the surface are more densely packed (at higher pressure) than those higher in the atmosphere because of the mass of gases pressing down from higher in the atmosphere.
    ATMOSPHERIC PRESSURE
  20. Temperature in atmospheric layers.

    The troposphere is warmed primarily by the Earth's surface;  temperature _____ as altitude increases in this layer.
    DECREASES
  21. Temperature in atmospheric layers.

    Temperatures _____ as altitude increases in the stratosphere, particularly the upper portion because ozone absorbs energy from the Sun
    INCREASE
  22. Temperature in atmospheric layers.

    Temperatures _____ with altitude in the mesosphere.
    DECREASE
  23. Temperature in atmospheric layers.

    Thermosphere and exosphere are the first to receive the Sun's rays, so they are very _____.
    WARM (INCREASE)
  24. The _____ _____ is about 19 km to 48 km above Earth in the stratosphere.  This layer of 3-atom oxygen molecules (03) protects the Earth from the Sun's harmful _____ _____.
    OZONE LAYER, ULTRAVIOLET RADIATION
  25. Ozone Layer

    Life on Earth, as we know it, _____ on it.
    DEPENDS
  26. Ozone Layer

    Pollutants called __________ (CFCs) are destroying the ozone layer.
    CHLOROFLUOROCARBONS
  27. Ozone Layer

    CFCs are used in _____, air conditioners, aerosol sprays, and foam packaging.
    REFRIGERATORS
  28. Ozone Layer

    If these products develop a leak, CFCs can enter the _____.
    ATMOSPHERE
  29. The ozone layer has a large hole over _____ and a small one over the _____ _____.
    ANTARCTICA, NORTH POLE

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