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15 Cards in this Set

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  • Back
What causes air pressure?
weight of the atmosphere.
Air pressure is gratest at ____ and ______ with altitude
earth's surface and decreases.
decrease pressure ___ humidity
increase
The air's ability to hold vapor depends on what?
the temp.
As air absorbs moisture, it's density ______
decreases
As your height above the surface of earth increases, atmospheric pressure ___
decreases
Cool, dry air is usually ___ dense than warm, moist air
less
What name is given to a large group of tiny ice crystals suspended high in the sky?
clouds
When the air temp. us below 0 decrees C, we can see the cloud b/c it contains:
ice crystals
When water evaporates into the atmosphere, volume _____
increases
What is used to measure precip. (units)
inches
What quantity is measured in %, not degrees?
Relative humidity
What happens then the air is cooled below the dew-point temp?
a cloud will form
When we record the weather, usually we do not measure the:
angle of the sun.
do you hate mr.mule??
yes...a ton!