EARTH

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Across
  1. 2. when is the troposphere thinnest?
  2. 3. What is a major obstacle in the troposphere?
  3. 5. here temperature from the sun effects this layer
  4. 8. the body or air the surrounding earth/envelope of gasses held around the earth filters what comes in and out of earth
  5. 10. Boundary for the exosphere
  6. 11. blank and oxygen is 99% of earth, what is blank?
  7. 12. gasses These are colorless, tasteless, formless, and they blend together so well
  8. 13. In the stratosphere what is a major obstacle?
  9. 14. This happens when high energy particles collide with the sun
  10. 15. closest to the earth contains the air humans breath
  11. 16. line Marks the altitude where a traditional aircraft can no longer effectively fly
Down
  1. 1. the air is especially thin meteors burn up here
  2. 4. Thomas Made the comparison between the “world's biggest memory” in 1973
  3. 6. this has very few molecules that can escape into space
  4. 7. Where the Ozone layer is
  5. 9. layer Absorbs most of the sun's ultra violet radiation