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SCI-7 U6

Vocab Quiz 3

Air Pressure A measure of the force of air pressing down on the Earth’s surface.
Barometer A weather instrument used to measure air pressure.
Relative Humidity The percentage of moisture that air holds relative to the amount of moisture it could hold at a given temperature.
Air Mass A large body of air with uniform properties throughout (temperature, humidity, and pressure).
Cold Front A weather front that forms when a cold air mass meets and pushes under a warm air mass. Violent storms are associated with this type of front and fair, cool weather usually follows.
Warm Front A type of weather front that forms when a mass of warm air overtakes a cold air mass and moves over it. Rain and showers usually accompany this type of front and hot, humid weather usually follows.
Stationary Front A weather front that forms when a warm air mass meets a cold air mass and no movement occurs. This type of front can cause weather conditions that can last for days.
Occluded Front A weather front that forms when a cold front overtakes a warm front, pushing the warm air upwards until cold air meets cool air. Less extreme weather occurs during this type of front.
Created by: susanmason