Across
- 2. a large body of air that forms over a land mass or large body of water
- 4. water vapor in the atmosphere condenses to form clouds
- 5. high altitude clouds; made of ice crystals
- 6. an instrument used to measure air pressure
- 8. puffy cotton-ball clouds; seen on clear, warm days
- 10. low layer clouds; dark; sometimes bring light rain
- 13. plants release water as a gas
- 15. an instrument used to measure water vapor in the air
- 16. all the particles of air pressing down on the surface of the earth
- 17. water vapor in the air
- 18. the border where 2 air masses meet
Down
- 1. water changing from liquid to a gas
- 3. clouds towering dark clouds; rain on its way
- 4. water is stored in lakes, rivers, and oceans
- 7. the layer of air that surrounds our planet
- 9. water that flows over the ground
- 11. water falls to the ground in the form of rain, sleet, snow and hail
- 12. an instrument used to measure wind speed
- 14. an instrument used to measure precipitation