1. What about clouds?

2. What are clouds?
Large masses of millions of water droplets suspended in air

3. Water evaporates from lakes, streams, and oceans and enters into the air

4. Transpiration – the loss of water from plants through their leaves
Evapotranspiration – combines evaporation and transpiration

7. Steps involved in cloud formation:
…..Warm, MOIST air RISES

9. ….a drop in air pressure causes…..
….Expansion and the air Cools
.... Water vapor then…..

10. ……..Condenses on……
…..Condensation Nuclei (a surface upon which condensation droplets can stick on. Ex: dirt, salt, smoke)
……..Clouds form!!!

11. Condensation Nuclei

12. Size comparison between raindrop and condensation nuclei

13. Cloud Altitudes

14. Types of precipitation
Rain
Freezing rain
Hail
Snow
Sleet

15. Hail – moisture that freezes in clouds through accretion

16. Actual Photo’s of Snowflakes

17. Freezing rain: snow falls into warmer air…melts…then into cooler air and freezes upon contact with surface

18. Sleet: formed like freezing rain…
Sleet: formed like freezing rain….but droplets freeze and bounce off surface