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