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1:3 Weather

Ch.1 Sec. 3 Air Pressure

DefinitionTerm
The amount of mass of a substance to a given volume. Density
The force pushing on an area or surface Pressure
A force that is the result of the weight of a column of air pushing down on an area. Air Pressure
An instrument used to measure changes in air pressure. Barometer
An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury. Air pressure pushing on the mercury in the dish forces the mercury in the tube higher. Mercury Barometer
An instrument that measures changes in air pressure without using a liquid. Changes in the shape of an airtight metal box cause a needle on the barometer dial to move. Aneroid barometer
Elevation above sea level. Altitude
Created by: barneslan12
 

 



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