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16 terms

terms for scince class may 10

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Dew Point
The temperature that which the air has to be cooled to reach saturation
Reletive Humidity
The ration of the air's water-vapor content to its water-vapor capacity
Condesation Nuclei
Tiny bits of particulate matter that serve as surfaces on which water vapor condenses
Cirrus
One of three basic cloud forms; one of the three cloud types; thin delicate ice crystal clouds.
Cumulus
One of three basic could forms; billowy individual cloud masses that often have flat bases
Stratus
One of three basic cloud forms; sheets or layers that couver much or all of the sky
Air Mass
A large body of air that is characterized by similar temperatures and amounts of moisture at any given altitude
Front
The boundary between two adjoining air masses having constrasting characteristics
Warm Front
A front along which a warm air mass overrides a retreating mass of cooler air.
Cold Front
a front along a cold air mass thrusts beneath a warmer air mass
Stationary Front
a situation in which the surface posisiton of a front does not move
Occluded Front
a front formed when a cold front overtakes a warm fornt; it marks the beginning of the end of a middle-latitude cyclone
Thunderstorm
a strom produced by a cumulonimbus cloud and always accompanied by ligtining and thunder. Short but strong
Tornado
Small, very intense cyclonic storm with exeedingly high winds, most ofter produced alond cold fronts and severe thunderstorms.
Cumulonimbus
a dark cloud of great vertical extent charged with electricity
Supercell Thunderstorm
large, rotating single-cell thunderstorm, can cause tornadoes, large hail, frequent lightning, heavy rain, strong winds