The Atmosphere: Chapter 18

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Across
  1. 4. usually burn up upon entry into the earth's atmosphere
  2. 6. a series of rays and particles emitted into space by nuclear reactions occurring in the sun's core
  3. 7. a lower division of the atmosphere: O2=21%, N2=78%, and other gases=1%
  4. 10. makes up 21% of our atmosphere's gas composition
  5. 11. strong, fast wind currents blowing through the stratosphere
  6. 13. the region above the troposphere; it is clear, cold, and free from dust
  7. 15. includes the geomagnetic field and radiation belts that surround the earth
  8. 16. a layer that protects the earth from harmful ultraviolet radiation (UV)
  9. 17. the envelope of gases that surround the earth
Down
  1. 1. makes up 78% of our atmosphere's gas composition
  2. 2. a layer of specially charged particles that can affect communication on the earth
  3. 3. this layer has the coldest measured temperature in the atmopshere
  4. 5. also called the weather layer; gases here are continually mixed
  5. 8. welcome to outer space!
  6. 9. the upper division of the atmosphere where gases are layered by mass
  7. 12. an established decrease in temperature as one goes higher in elevation
  8. 14. this layer records the highest measured temperatures due to direct exposure to solar radiation