Clouds!

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Clouds!

• Formation and Types

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Cloud Formation

1. Warm, moist air rises from the surface. As air
   rises, it cools
2. At a certain height, air cools to the dew point
   and condensation begins
3. Water vapor condenses on tiny particles in the
   air, forming a cloud!

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Types of Clouds 3 Main types

• Cirrus
• Cumulus
• Stratus

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Cirrus Clouds

• Whispery and feathery clouds
• Form at HIGH altitudes
• Made of ice crystals!
• Often indicate that a storm is on the way!

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Cumulus Clouds

• Look like fluffy, rounded piles of cotton
• Cumulus Clouds that are not very tall indicate
  fair weather
• Tall and towering cumulus clouds with flat tops
  are thunderclouds (cumulonimbus)

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Cumulus
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Cumulonimbus
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Stratus Clouds

• Clouds that form in flat layers
• Usually cover all or most of the sky and are a
  uniform, dull, gray color
• When they thicken, they may produce drizzle,
  rain, or snow!

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Stratus Clouds
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Nimbostratus Clouds
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Altitude and Clouds

• Part of a clouds name may be based on height
• Clouds between 2-6 kilometers have the prefix
  alto
• Two main types Altocumulus and altostratus
• Middle-Level clouds that are higher than regular
  cumulus and stratus but lower than cirrus clouds

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Altocumulus
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Altostratus
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Fog

• Clouds that are near the ground
• Often forms when the ground cools at night after
  a warm, humid day
• The ground cools the air just above the ground to
  the airs dew point
• The next day the heat of the sun burns away the
  fog as the water droplets evaporate
• Common near bodies of water or low-lying marshy
  areas

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Fog
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Name that Cloud!
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