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Atmospheric pressure - Wikipedia


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 ...

What causes atmospheric pressure? | Reference.com


The weight that the atmosphere exerts as it pushes downward causes atmospheric pressure. This pressure in the Earth's atmosphere affects the...

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 ...

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 causes atmospheric pressure? - Quora


Doesnt that answer itself: The atmosphere. The atmosphere is made of gases. Gases are matter. Matter has mass. Mass under the influence of gravitational pull  ...

What causes high pressure?


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

pressure.htm - University of St Andrews


Atmospheric pressure is often measured in millibars, 1 Millibar = 100 Pa (100 Pa ... For equilibrium, the pressure exerted by an air parcel is exactly balanced by the ... Therefore, we can see that any change in any one variable is likely to cause ...

You've got one tonne of air pressing down on you, the same as a ...


Even though they're too tiny to see, all the molecules of air in the atmosphere above ... And the combined weight of these molecules causes a pressure pressing down ... to cope when the internal and external pressures aren't exactly the same.

What Causes Barometric Pressure Headaches


Barometric Pressure Headache Causes. Biometeorology is the study of the ... Triggers involving changes in electrical activity within the brain. Triggers involving ...

What causes wind? - Met Office


Sep 17, 2015 ... So wind is caused by differences in atmospheric pressure - but why do we get these differences? It's down to the rising and sinking of air in the ...

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What Causes Barometric Pressure? | Our Everyday Life


The weight of the air above causes atmospheric pressure. ... That's exactly what happens, so barometric pressure gets lower as you go from the seashore to the ...

Atmospheric pressure | Define Atmospheric pressure at Dictionary.com


The pressure at any location on the Earth, caused by the weight of the column of air above it. At sea level, atmospheric pressure has an average value of one ...

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 ...