MadSci Network: Earth Sciences

Re: the atmosphere and pressure

Date: Fri Jan 18 13:43:47 2002
Posted By: Nezette Rydell, forecaster,National Weather Service
Area of science: Earth Sciences
ID: 1010541654.Es

The molecules that make up the atmosphere have mass and are held close to the earth by earth's gravitational force. The exertion of gravity on this mass gives them weight. The weight of this mass creates pressure below. You can find discussions on atmospheric pressure at a number of sites on the web. Two I'd recommend:
The University of Illinois

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