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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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slide1

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?
slide3

Condensation

  • Water vapor needs a surface to condense on
slide4

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
slide5

Three main types:

  • Classified by:
  • Cumulus clouds
  • Stratus clouds
  • Cirrus clouds
  • Form
  • Altitude
slide7

Cumulus Clouds

  • Puffy, white clouds with flat bottoms
  • Indicate fair weather
  • If they get very large, can form thunderstorms (cumulonimbus cloud)
slide8

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
slide9

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
slide10

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)
slide11

Objective: 2/26/2013

List three types of cloud forms.

Outro

At what altitude would you find a altostratus cloud? (low, medium, high)