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What are clouds?
Have you ever looked at clouds ?
Did they look like shapes?
Have you ever wished you could float on a cloud?
Clouds are fun to watch and think about .
But what are they really .
Did you know there are water drops in the air?
These water drops are so tiny that they float.
If there are a lot, they collect in groups .
When water collects in the air, it forms clouds.
Clouds are made of water drops.
If it's cold, they can be
ice crystals.
Some days, there are no clouds to be seen.
On other days there are a few.
And sometimes there are a
lot .
It depends on how much water is in the air.
Some clouds are seen way up high .
Others are seen lower in the sky.
Clouds often look white but they can also look gray .
Why is that ?
The water droplets or ice crystals in clouds scatter all the
light from the Sun.
Light from the Sun is all
the colors of the rainbow.
But when all the colors
are put together , they make white.
So clouds appear white in color .
But what about the gray clouds.
As the clouds gather more
water vapor and ice crystals, It becomes thicker and denser.
This results in scattering less light from the Sun.
So the clouds appear gray
in color.
Clouds are named for how they look.
Have you seen clouds that look like big heaps.
Those are called cumulus
clouds.
Cumulus means heap.
Have you seen some that look like wisps of hair .
Those are called cirrus clouds.
Cirrus means hair.
What about the layer of clouds that look like a blanket .
This is a Stratus cloud.
The word means layer.
Other cloud names are made of two different names put together .
The word for rain cloud is Nimbus .
Sometimes, you'll see a
cumulus heat cloud that is a rain cloud Nimbus.
This is called a cumulo-nimbus, cumulus and Nimbus cloud.
This means a piled up rain cloud.
Another example is a nimbostratus cloud.
This is a mix of Nimbus rain cloud and Stratus layer cloud.
It's a stretched-out rain
cloud .
Did you know that clouds tell us about the weather.
Cumulus clouds the heats tell us it will be sunny.
Cirrus clouds the wisps of hair tell us that the weather is
about to change.
If it's a sunny day, a
storm may be on the way.
Stratus clouds the layers.
Tell us there will be fog or drizzle.
Fog is a cloud that is
close to the earth.
Drizzle is light rain .
The big dark cumulonimbus clouds means bad weather.
They bring snow, hail and lightning.
Do you want to know the weather .
Look at the clouds.
Now, let's summarize what we've learned.
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