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Clouds. WHAT IS A CLOUD?. A collection of water droplets Why White? -They are white, because they reflect the color of the sun. Why Gray? – They are gray when the sun is unable to shine through. What makes clouds move?. WIND On a windy day the clouds will move with the wind. - PowerPoint PPT Presentation
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CLOUDS
WHAT IS A CLOUD?
A collection of water droplets
Why White? -They are white, because they reflect the color of the sun.
Why Gray? – They are gray when the sun is unable to shine through.
WHAT MAKES CLOUDS MOVE?
WIND On a windy day the
clouds will move with the wind.
Speed – Clouds can move up to speeds of 30-40 mph.
HOW IS FOG FORMED?
Fog is a cloud that is on the ground.
Fog is a result of warm air meeting cold air.
GROUPS OF CLOUDS
There are three groups of clouds.
High Clouds - Cirrus
Medium Clouds - Alto
Low Clouds - Cumulus
Clouds that grow verticalStratus
Special CloudsFog is a special
cloud.
TYPES OF HIGH-LEVEL CLOUDS
There are three types of high-level clouds:CirrusCirrostratusCirrocumulus
CIRRUS
Cirrus clouds are above 18,000 feet.
They are long and wispy.Usually mean good weather.
What does a cirrus cloud look like?
CIRROSTRATUS
Thin and sheet like.
Brings bad weather.
CIRROCUMULUS
Rows of long white puffs.
Look like fish scales.
In tropical regions.
TYPES OF MEDIUM-LEVEL CLOUDS
There are two types of medium-level clouds:
Altostratus
Altocumulus
Medium-level clouds are between 6,500 – 18,000 feet in the air.
ALTOSTRATUS
Are colored gray or blue-gray.
Covers the whole sky.
Appear before long periods of rain or snow.
ALTOCUMULUS
Are puffy and gray.
Usually bring thunderstorms.
TYPES OF LOW-LEVEL CLOUDS
There are three types of low-level clouds:
Stratus
Stratocumulus
Nimbostratus
Low-level clouds only go up to 6,500 feet in the air.
STRATUS CLOUDS
Stratus clouds cover the whole sky.
Looks like fog in the sky.
Brings light rain.
What does a stratus cloud look like?
STRATOCUMULUS
Are low, puffy, and gray.
Form in rows.
Can turn into a Nimbostratus cloud.
NIMBOSTRATUS
Are dark gray.
Associated with rain and/or snow.
Produce precipitation light to moderate.
CLOUDS THAT GROW VERTICAL
There are two types of clouds that grow vertical:
Cumulus
Cumulonimbus
Vertical means: (in this case) to grow upward.
CUMULUS CLOUDS
Cumulus clouds are big, white, and puffy.
They grow upward.
What does a cumulus cloud look like?
CUMULONIMBUS
Are anvil shaped. Winds blow the top of the cloud to make it flat.
Associated with severe weather.
The tip of the cloud points in the direction it is moving.
