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Agenda 1/14

Warm-Up: State one fact you already know about clouds. Get out your atmosphere WS “The Air Up There” to check Look over your notes to prepare for today’s quiz Cloud Notes Cloud Observations. Agenda 1/14. Clouds: Types & Formation. Meteorology.

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Agenda 1/14

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  1. Warm-Up: State one fact you already know about clouds. • Get out your atmosphere WS “The Air Up There” to check • Look over your notes to prepare for today’s quiz • Cloud Notes • Cloud Observations Agenda 1/14

  2. Clouds: Types & Formation Meteorology

  3. Warm moist air rises, expands, and cools in a convection current • Air reaches dew point, water vapor in air condenses around small particles in atmosphere (sea salt, dust) • Millions of these droplets collect= form clouds • Clouds can also form from colliding air masses of different temperatures How do clouds form?

  4. Cirrus • Cumulus • Stratus • Nimbus PREFIXES: • Cirro (high clouds with base above 6000 m) • Alto ( middle clouds with base b/w 2000-6000 m) • Strato (low clouds below 2000 m) Types of Clouds

  5. Cirrus • Cumulus • Stratus • Nimbus PREFIXES: • Cirro (high clouds with base above 6000 m) • Alto ( middle clouds with base b/w 2000-6000 m) • Strato (low clouds below 2000 m) Types of Clouds

  6. thin, wispy • Most common type of high-level cloud • Made of ice crystals (freezing of water droplets) • Occur in fair weather • Point in direction of air movement Cirrus

  7. “heap” or “pile” • Develop vertically, with clear defined edges • May appear alone, in lines, or in clusters • Puffy and cotton-like in appearance • Considered either low or middle level cloud Cumulus

  8. Form when fog lifts away from Earth’s surface • Can be considered both low and middle level clouds • Uniform, grayish clouds, usually cover entire sky • Look like a layer of fog that never reaches the ground • Precipitation rarely falls from these clouds (light drizzle) Stratus

  9. Large, grayish black in color • Precipitation clouds, carry large amounts of droplets of water • Found at low altitudes • Normally formed due to warm weather conditions • Develop from cumulus clouds, usually tall • Cumulonimbus: clouds that cause thunderstorms (water droplets closely packed) Nimbus

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