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The encyclopedia says that a cloud is an "aggregation of
minute particles of water or ice suspended in the air.
Clouds form when air containing water vapor is cooled below a
critical temperature called the 'dew point'. The resulting
moisture condenses into droplets on microscopic dust
particles (condensation nuclei) in the atmosphere."

Doesn't sound very dream-like, does it? Clouds are neat.
This unit does not speak to the colors that clouds take on at
sunrise or sunset. It is so wonderful to see lovely pink
clouds in the evening. Then you find out that they are pink,
not with the flush of romance, but because of volcanic ash in
the atmosphere. Like taking the romance out of the moon by
getting guys up there to walk on it, clouds are also brought
into cold reality by this bit of information.

Keep records for a week of the kinds of clouds that you see.
You will learn to recognize some of the common cloud types:
Cirrus, cumulus, and stratus are the basic types of clouds.
Each type of cloud is formed by specific atmospheric
conditions, and is, therefore indicative of forthcoming

Cirrus clouds are very high in the atmosphere. They usually
look feathery and are composed of tiny ice crystals. They
are usually a sign of clear weather.

Cumulus clouds are lower than cirrus clouds, and airplanes
often fly above them. They are vertically developed, usually
with a horizontal base and a dome-shaped upper surface. They
look like white puffs in the sky and usually indicate fair

Stratus clouds are the lowest clouds, and are foglike. They
form gray layers across the sky. They are associated with
stormy weather.

Cumulonimbus clouds, commonly called thunderheads, indicate
rain. They are usually very low in the sky and look thick
and black. They generally bring rain, snow, sleet, or hail.

Cirrostratus clouds are high-altitude layered clouds that
often indicate rain or snow.

Are clouds the same as fog?

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