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Atmospheric pressure


Atmospheric pressure, sometimes also called barometric pressure, is the pressure exerted by .... One atmosphere (101 kPa or 14.7 psi) is the pressure caused by the weight of a column of fresh water ...

Atmospheric Pressure


Key idea: Atmospheric pressure is caused by the weight of the atmosphere pushing down on itself and on the surface below it. Pressure is defined as the force ...

What causes atmospheric pressure? - Quora


This created a near vacuum in the upper half of can which was crushed under the force exerted by the atmosphere upon it. That is atmospheric pressure.

atmospheric pressure - National Geographic Society


May 14, 2011 ... That pressure is called atmospheric pressure, or air pressure. ... from higher pressure to lower pressure can cause decompression sickness.

What causes high pressure?


Nov 27, 2010 ... Brief, simplified description of atmospheric high pressure areas.

Atmospheric pressure | Define Atmospheric pressure at Dictionary.com


Atmospheric pressure definition, the pressure exerted by the earth's ... areas of low air pressure, the air is less dense and relatively warm, which causes it to rise.

Causes of Atmospheric Pressure changes | Actforlibraries.org


What is defined as air pressure is the result of molecules of air weighing down on ... The most commonly known cause of changes in atmospheric pressure is a ...

What causes atmospheric pressure - Answers.com


Amospheric pressure is caused by the weight of air molecules above it. As elevation increases, fewer air molecules are present. Therefore, atmospheric ...

Atmospheric Pressure: Definition & Facts - Live Science


Aug 29, 2013 ... Atmospheric pressure is the force exerted against a surface by the weight ... to warm air, clouds and precipitation are caused by cooling the air.

What are the factors other than temperature that affect atmospheric


The effect of altitude on atmospheric pressure is so large that meteorologists ... Finally, atmospheric pressure can be influenced by wind patterns, which cause ...

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Q & A: what causes atmospheric pressure? | Department of Physics ...


Jan 11, 2013 ... Consider the three statements 1)Air pressure acts from all directions 2)Air ... The atmospheric weight isn't quite as proximate a cause of the ...

Cause of atmospheric pressure | Physics Forums - The Fusion of ...


Jan 2, 2012 ... Imagine an open empty vessel (with air) at atmospheric pressure as per ... a problem in understanding the real cause of atmospheric pressure.

Atmospheric pressure - definition of atmospheric pressure by The ...


Pressure caused by the weight of the atmosphere. At sea level it has a mean value of one atmosphere but reduces with increasing altitude. Also called ...