Chapter 15 words.txt

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Chapter 15 words.txt
2011-02-09 10:41:37
atmosphere science

chapter 15 words defined.
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  1. Define Atmosphere
    A mixture of gases that completely surrounds a planet or moon.
  2. Define Air pressure
    The measure of the force with which air molecules push down on a surface.
  3. Define Troposphere
    The lowest layer of the atmosphere, in which the temperature decreases at a constant rate as altitude increases.
  4. Define Stratosphere
    The layer of the atmosphere that is above the troposphere and which temperature increases with the altitude.
  5. Define Mesosphere
    The layer of the atmosphere between the stratosphere and the thermosphere and the temperature decreases as altitude increases.
  6. Define Thermosphere
    The upper most layer of the atmosphere, in which temperature increases with the altitude.
  7. Define Radiation
    The transfer of energy as electromagnetic waves.
  8. Define Thermal Conduction
    The transfer of energy as heat though a material.
  9. Define Convection
    The movement of matter due to differences in density; the transfer of energy due to the movement of matter.
  10. Define Greenhouse Effect
    The warming of the surface and lower atmosphere of earth that occurs when water vapor, Carbon dioxide, and other gases absorb and radiate thermal energy.
  11. Define Global warming
    A gradual increase in average global temperature.
  12. Define wind
    The movement of air caused by differences in air pressure.
  13. Define Coriolis effect
    The apparent curving of the path of an object from an otherwise straight path because of the earth's rotation
  14. Define polar eastlerlies
    Prevailing winds that blow from east to west from 60 to 90 latitude in both hemispheres
  15. Define westerlies
    Prevailing winds that blow from west to east between 30 to 60 latitude in both hemispheres
  16. Define Trade Winds
    Prevailing winds that blow northeast from 30 north latitude to the equator and that blow southeast from 30 south latitude to the equator
  17. Define Jet streams
    A narrow belt of strong winds that blow in the upper troposphere
  18. Define Air Pollution
    The contamination of the atmosphere by the introduction of pollants from human and natural sources
  19. Define acid precipitation
    Rain, sleet, or snow that contains a high concentration of acids