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Clouds

Different cloud types form in different types of weather and may signal a change in the weather.

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Clouds
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Vocabulary

cloud

cloud

Tiny water or ice particles that are grouped together in the atmosphere.
dew point

dew point

The temperature at which air is saturated with water vapor; when it has 100% humidity.
fog

fog

Air condensed below its dew point that is near the ground like a cloud.
relative humidity

relative humidity

The amount of water vapor in the air relative to the maximum amount of water vapor that the air could contain at that temperature.

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