1. Objective: 2/26/2013
List three types of cloud forms.
Intro
Write Q&A in notebook:
What do you think is happening when you exhale and see a “cloud” of breath in cold temperatures?

2. Clouds

3. Condensation
Water vapor needs a surface to condense on

4. Collection of small water droplets or ice crystals suspended in air
Cloud
Collection of small water droplets or ice crystals suspended in air
Forms when the air is cooled and condensation occurs
Droplets can only form on solid surfaces
Dust particles mostly

5. Three main types:
Classified by:
Cumulus clouds
Stratus clouds
Cirrus clouds
Form
Altitude

7. Cumulus Clouds
Puffy, white clouds with flat bottoms
Indicate fair weather
If they get very large, can form thunderstorms (cumulonimbus cloud)

8. Stratus clouds
Form in layers
Cover large areas of the sky and block out the Sun
Lower in altitude
Nimbostratus clouds – dark and rains continuously
Fog – stratus cloud on the ground

9. Cirrus clouds
Thin, feathery, white clouds
Form at very high altitudes where winds are strong
Made of ice crystals
Indicate a change of weather is coming

10. When clouds become full of water, they release it as either:
Precipitation
When clouds become full of water, they release it as either:
Rain – liquid water falls to ground
Snow – water freezes into snowflakes that fall to ground
Sleet (flipchart)
Hail (flipchart)

11. Objective: 2/26/2013
List three types of cloud forms.
Outro
At what altitude would you find a altostratus cloud? (low, medium, high)