Download 9.26-27.13

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Complete the warm-up: Air Mass Review
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Condensed water droplets or solid ice crystals
that float in Earth’s troposphere, moving with
the wind.
a.
b.
c.
When warm and cool air meet
Warm air rises up the side of a mountain and
cools as it rises
Warm air flows over a cooler area
This occurs because cool air can hold less water
vapor than warmer air.
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Clouds are classified into a system that uses
Latin words to describe the appearance of
clouds.
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Latin Root: Cumulus
Translation: Heap
Draw a picture!
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Latin root: Stratus
Translation: layered or spread out
Draw a picture!
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Latin root: Cirrus
Translation: curl of hair or wispy
Draw a picture!
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Latin root: nimbus
Translation: rain
Draw a picture!
Further classification identifies clouds by…
Height of cloud’s base
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Cirrus: high levels
Above 20,000ft made of ice crystals
Thin and white in appearance
Can appear in many color at dusk
No precipitation
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Alto: Middle levels
Between 6,500 to 20,000ft
Made of water droplets or ice
Weather associated
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Stratus: Low levels
Below 6,500 feet
Rain
Water droplets or ice particles/snow
Fog: cloud in contact with the ground. Can also
be another form of stratus cloud
Contrails: made from jet fuel released in the air
at high altitude.
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Can grow to heights in excess of 39,000 ft.
Severe weather associated
Energy within the cloud