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Lesson 2-1 what is weather
phillip heflin
11
Other
7th Grade
04/24/2013

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Term
Weather
Definition
The state of the atmosphere at a specific time and place.
Term
Humidity
Definition
The amount of water vapor present in the air
Term
Relative humidity
Definition
The measure of the amount of water vapor present in the air compared to the amount of needed for saturation at a specific temperature
Term
Dew point
Definition
Changes with the amount of water vapor in the air.
Term
Fog
Definition
A stratus cloud that is formed near the ground.
Term
Precipation
Definition
This occurs when cloud droplets combine and grow large enough to Earth
Term
Stratus
Definition
Usually form at low alitudes and may be associated with fair weather or rain or snow.
Term
Cumulus
Definition
Masses of puffy, white clouds, often with flat bases. Often assouciated with fair weather or thunderstorms
Term
Cirrus
Definition
Clouds that appear fibrous and curly. They are high, thin, white, feathery clouds made of ice crystals. Often associated with fair weather, but they can indicate approaching storms.
Term
Hail
Definition
Precipation in the form of lumps of ice.
Term
Sleet
Definition
Precipation that forms when raindrops pass through
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