Barometric pressure

Barometric pressure

The downward pressure, at any given point in the atmosphere, of the gases directly above that point. Average pressure globally at sea level is 1,013,000 dynes per centimetre squared or 760 torr. This is defined as one atmosphere.

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Part of Speech: noun
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Industry/Domain: Chemistry; Weather
Category: Atmospheric chemistry
Educational Institution: Sam Houston State University
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barometric pressure

Engineering; Electronic engineering

The atmospheric pressure, usually given in inches of mercury. The average barometric pressure at the surface of the earth is just under 30 inches of mercury.

barometric pressure

Chemistry; Weather; Atmospheric chemistry

The downward pressure, at any given point in the atmosphere, of the gases directly above that point. Average pressure globally at sea level is 1,013,000 dynes per centimeter ...

barometric pressure

Weather; Meteorology

The pressure exerted by the atmosphere as a consequence of gravitational attraction exerted upon the “column” of air lying directly above the point in question. As with any gas, ...

barometric pressure

Earth science; Geology

A measure of the weight of an entire air column of unit area cross section above the barometer, as a consequence of gravitational attraction, or equivalently, the force exerted by ...

barometric pressure

Sports; Scuba diving

Same as atmospheric pressure with the exception that it varies with the weather.

barometric pressure

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A measure of the weight of an entire air column of unit area cross section above the barometer, as a consequence of gravitational attraction, or equivalently, the force exerted by ...

Charles

Chemistry; Atmospheric chemistry

French scientist who formulated Charles's law in 1787. He was the first person to fill a large balloon with hydrogen gas, making it light enough to fly.

carbon cycle

Chemistry; Atmospheric chemistry

The process by which carbon is constantly exchanged between living things and the environments. Plants and algae absorb carbon.

diffusion

Chemistry; Atmospheric chemistry

The tendency of two substances that are mixed together to move around until both substances are in all parts of the mixture.

fog

Weather; Atmospheric chemistry

Tiny drops of water floating in the air close to the surface of the Earth. Fog is actually a cloud that has formed near the ground.

freeze

Chemistry; Atmospheric chemistry

To change from a liquid to a solid by cooling to the freezing point. Water becomes ice when it freezes.

smoke

Chemistry; Atmospheric chemistry

A mixture of carbon dioxide, water vapour, gases, and often soot that is produced by the burning of a material that contains carbon.

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