Earth's Atmosphere

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Across
  1. 1. gas that absorbs almost all ultraviolet radiation from the sun
  2. 6. vapor occurs in air in highly variable proportions, helps to warm Earth's surface
  3. 7. harmful form of radiation from the Sun
  4. 8. the main component of the atmosphere, 78% of air
  5. 11. between altitudes of 50km and 80km, where small meteorites break up
  6. 14. layer of atmosphere that filters out ultraviolet radiation
  7. 17. gases like carbon dioxide and water vapor that contribute to the greenhouse effect
  8. 18. number of atmosphere layers
  9. 19. from refrigerants and aerosols, break down ozone
  10. 21. small meteorites that break up as they approach Earth
  11. 23. percent of atmosphere found below the first 15km
  12. 24. above altitude of 500km, very small amount of air
Down
  1. 2. 21% of the air
  2. 3. between altitudes of 80km and 500km, filters out most of the sun's harmful radiation and where polar auroras occur
  3. 4. between altitudes of 12km and 50km, contains the ozone layer
  4. 5. agreement between countries to prohibit CFCs
  5. 9. process of gases warming the Earth
  6. 10. form of radiation necessary for photosynthesis
  7. 12. the layer of gases surrounding the Earth
  8. 13. only 0.033% of air, but plays important role in radiation balance of Sun-Earth-atmosphere system
  9. 15. emitted from the Sun, includes visible light, ultraviolet, X-ray, and more
  10. 16. causes meteorites to heat and break up in mesosphere
  11. 20. pollutant gases reacting with water in the atmosphere, corrodes roots and leaves of plants
  12. 22. layer between Earth's surface and 12km, life develops and weather phenomena happen here