Across
- 3. transfer of heat by touch
- 4. transfer of heat by circulation
- 5. when light bounces off and object
- 7. the layer that is closest to the sun
- 9. the coldest layer; where meteors burn up
- 11. the amount of water vapor in the air
- 12. this energy reaches earth by radiation
- 13. the layer of gases that surround the earth
- 15. only 0.93% of earth's atmosphere
- 16. transfer of heat by electromagnetic waves
Down
- 1. temperature gradually starts to increase
- 2. 78% of earth's atmosphere
- 6. boundary between the troposphere and stratosphere
- 8. observations of weather over a long period of time
- 10. protects life on earth by absorbing harmful ultraviolet radiation
- 14. 21% of earth's atmosphere