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Chapter 7 section 2
Term | Definition |
---|---|
air pressure | the weight of atmosphere pressing down on the earth |
pressure | the continuous physical force exerted on or against an object by something in contact with it. |
density | is a measure of mass per volume |
aneroid barometer | a device for measuring atmospheric pressure without the use of fluids. |
barometer | an instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude. |
mercury barometer | a barometer in which the weight of a column of mercury in a glass tube |
altitude | the height of an object or point in relation to sea level or ground level. |