Atmosphere (Ch 15)

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Across
  1. 2. pollution that forms over cities
  2. 5. caused sculpture damage in Greece (461)
  3. 6. this layer scatters (harmful) UV rays
  4. 9. the lowest layer of the atmosphere, contains "weather"
  5. 12. only certain kinds of these can use atmospheric nitrogen (453)
  6. 13. large body of air
  7. 14. the atmosphere is composed of 78% _?_ (452)
  8. 16. _?_ practices can strip plants from the soil (462)
  9. 18. this instrument measures air pressure (455)
  10. 20. combines chemically with fuel such as wood, gasoline (453)
  11. 22. transfer of energy by movement of fluids
  12. 24. a type of precipitation lace with acid that can be harmful (467)
Down
  1. 1. primary air pollutant (463)
  2. 3. air _?_ is the force exerted by air on the area below it
  3. 4. thin layer of gases that surrounds earth
  4. 7. extends 11-50 km above sea level and holds pollutants
  5. 8. transfer of energy by contact
  6. 10. the transfer of energy through space
  7. 11. the atmosphere transports and recycles _?_ (452)
  8. 15. these conditions can result from air pollutants (464)
  9. 17. _?_ air can hold more water vapor than cold air (454)
  10. 19. _?_ humidity is a ratio of water vapor that the air can hold
  11. 21. water vapor becomes liquid in this process (454)
  12. 23. warm air is less dense than _?_ air