Across
- 3. Majority of atmosphere
- 4. how far away gas molecules are from each other
- 7. humans burn them for electricity, and other uses
- 12. layer of atmosphere that contains the aurora borealis
- 13. coldest layer in the atmosphere
- 15. Measure of the heat of something
- 17. mostly from agriculture, it is more destructive than carbon dioxide
- 19. measures amount of percipitation
- 21. these take in carbon for photosynthesis and produce oxygen
- 22. absorbs most sun's UV rays from the surface
- 24. Gas surrounding the Earth
- 25. Measures the air pressure
Down
- 1. majority of the greenhouse gases
- 2. measures wind direction
- 5. effect of global warming
- 6. measures wind speed
- 8. layer of the atmosphere that planes fly in
- 9. separates the troposphere and the stratosphere
- 10. outer shell of Earth and last layer until empty space
- 11. measures temperature
- 14. this effect causes global warming
- 16. amount of water vapor in the air
- 18. water in gas form
- 20. necessary for human life
- 23. this decreases with altitude in the atmosphere