Across
- 4. the colder air mass pushes out the warmer air mass
- 5. An instrument used to measure humidity
- 7. the layer of the earth's atmosphere that is able to reflect radio waves
- 9. is the lowest layer of the atmosphere
- 11. winds spiral in a counterclockwise rotation
- 13. This layer is the hottest layer
- 14. The outermost layer of the earth's atmosphere
- 15. absorbs ultraviolet rays
Down
- 1. where most jets fly
- 2. winds spiral in a clockwise rotation
- 3. the coldest layer of the atmosphere
- 6. an object that measures atmospheric pressure
- 8. Fog or haze combined with smoke and other atmospheric pollutants
- 10. the hot water rising and the cold water sinking within a fluid
- 12. Invisible rays that come from the sun, can burn skin