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Weather_grade6

air pressure, fronts, air mass

QuestionAnswer
Air Pressure The weight of (the atmosphere's)air pressing down on an area
High Air Pressure When the air inside is MORE dense than the surrounding air. Cool air has higher air pressure
Low Air Pressure When the air inside is LESS dense than the surrounding air. Warm air has lower air pressure.
Air Mass A large body of air with the same temperature and humidity throughout it
POLAR Air Mass A large body of COLD air that forms over ARTIC areas
TROPICAL Air Mass A large body of WARM air that forms over the TROPICS
MARITIME Air Mass A large body of MOIST air that forms over OCEANS
CONTINENTAL Air Mass A large body of DRY air that forms over land
Front A boundry (where the two masses meet)between two air masses
WARM Front When warm air moves into an area of cooler air; brings rain
COLD Front When cold air moves into an area of warmer air; brings precipitaiton
STATIONARY Front The boundary between two air masses that aren't moving
Relative Humidity The ratio of the actual amount of water vapor in the air to the total amount of water vapor that the air could contain at that temperature
Created by: hbms2
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