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Intro

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?. Clouds. Condensation. Water vapor needs a surface to condense on.

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Intro

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  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 • Forms when the air is cooled and condensation occurs • Droplets can only form on solid surfaces • Dust particles mostly • Cloud

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

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

  7. 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

  8. 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

  9. 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)

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

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