The Atmosphere

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Across
  1. 2. Above the stratosphere lies this layer. It extends 50-80 kilometers above sea level.
  2. 4. Protects and improves the quality of air in order to safeguard human health and the environment.
  3. 5. Smoke and soot consist of tiny particles, or particulate matter.
  4. 6. Harmful products produced when primary air pollutants react chemically with other substances.
  5. 7. Is a device in a motor vehicle that reduces the amount of air pollutants in emissions.
  6. 10. The lowest layer of the atmosphere, the one directly above the ground.
  7. 12. The ratio of water vapor the air contains to the maximum amount it could have at that temperature.
  8. 13. The transfer of energy through space.
  9. 14. Throughout a large body of air called an ___________ properties such as temperature, pressure, and humidity are similar.
  10. 15. Are carbon-containing fuels that formed million of years ago from the remaining of living things.
  11. 17. The force exerted by air on the area below it.
  12. 18. The transfer of heat directly between tow objects that are in contact with one another.
  13. 21. Ozone is concentrated in a potion of the stratosphere called __________.
  14. 22. The boundary between air masses that differ in temperature and moisture
  15. 23. Removes pollutants or changes them chemically before they leave factory smokestacks.
  16. 24. The thin layer of gases that surrounds Earth.
  17. 27. The top layer which begins about 80 kilometers above Earth's surface and extends upward into space.
  18. 28. The transfer of heat by the movement of currents within a fluid.
Down
  1. 1. Such as soot and carbon monoxide, are pollutants released directly into the troposphere.
  2. 3. When some pollutants combine with water, oxygen, and other chemicals in the atmosphere, they form compounds called acids. These acids may settle to the surface of Earth.
  3. 8. The release of damaging materials into the atmosphere.
  4. 9. Sinking cool air and rising warm air form these.
  5. 11. Family of chemical compounds containing chlorine, fluorine, and carbon.
  6. 16. Or thermal inversion, is the condition in the troposphere in which a layer of cooler air is located beneath a layer of warmer air.
  7. 19. This treaty strengthened by later amendments, called for major cuts in CFC manufacture.
  8. 20. The layer of the atmosphere above the troposphere.
  9. 25. The area of lowered ozone concentration over Antarctica that occurs every year from August until October.
  10. 26. An unhealthy mistune of air pollutants that may form over cities and nearby areas.