Atmosphere

4. Earth's Air
6. type of energy that comes to Earth from the Sun
10. group of chemical compounds that may enter the atmosphere and destroy ozone
11. Shooting stars known as meteors burn up in this layer
14. how energy travels from the sun to Earth
16. creates blue skies
17. absorbs most of the Sun's harmful ultraviolet radioation
18. layer of electically charged particles in the thermosphere that absorbs AM radio waves during the day and reflects them back at night

1. planes travel in this layer
2. thermal energy going through a material by touch
3. narrow belt of strong winds that blows near the top of the troposphere
5. Outermost layer of the atmosphere
7. layer of Earth's atmosphere that is closest to the ground
8. keep Earth warm at night and cool during the day
9. substance heats up and becomes less dense, releases heat, cools down and becomes more dense, sinks, and repeats forming currents
12. thermal energy traveling in waves or rays
13. protects Earth from gamma and x-ray radiation
15. Above 80 km and extends to space