The force exerted on a surface by the weight of the air above it. The internationally recognized unit for measuring this pressure is the kilopascal.

The cumulative force exerted on any surface by the molecules composing air.

force pressed on an object by air or atmosphere.

(1) The force created by air pushing on a surface. (2) The weight of the atmosphere over a particular point, also called barometric pressure. Average air exerts approximately 14.7 pounds (6.8 kg) of force on every square inch (or 101,325 newtons on every square meter) at sea level.

the force of the atmosphere on the surface.

The force exerted by the weight of a column of air over a given surface area.

Air pressure is the weight of the atmosphere pressing down on the earth. It is measured by a barometer in units called millibars.

Force that air exerts over a certain area due to it's weight or motion.

atmospheric pressure

the force put on a given area by the weight of the air around it.

The amount of air that is inside a tyre. This is measured in PSI [pounds per square inch] or Bars. The recommended air pressure is available from your vehicle handbook.

see atmospheric pressure.

The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air Pressure within a closed Environment.

The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment.

The weight of the atmosphere over a particular point, also called barometric pressure. Average air exerts approximately 14.7 pounds (6.8 kg) of force on every square inch (or 101,325 newtons on every [..]

the pressure

The force per unit area that the air exerts on any surface in contact with it. Primarily used for articles pertaining to air pressure within a closed environment. (12 Dec 1998)

A measure of the mass of air above a given point. Usually expressed in millibars (mb) or hectopascals (hPa). Also known as atmospheric or barometric pressure (pressure measured by a barometer).

The pressure exerted by the weight of air above a given point, usually expressed in millibars (mb) or inches of mercury (in. Hg).

The weight of the atmosphere pressing down on the Earth’s surface as a result of gravity

The cumulative force exerted on any surface by the molecules composing air; usually expressed as the weight of a column of air per unit surface area.

(atmospheric pressure

or atmospheric pressure. - air pressure is the force exerted on a surface by the weight of the air above it. The internationally recognized unit for measuring this pressure is the kilopascal. Air Qual [..]

Air pressure is measured in hectopascals.  Regions of sinking air are called high pressure regions.  Clear skies and fair weather usually occur in these regions.  Regions of rising air are called low [..]

Also known as barometric pressure, is the weight of a column of air that extends from the surface (ground or water) to the top of the atmosphere. A tornado has very low air pressure.

Air Pressure is the force per unit area exerted by the weight of the atmosphere above a point on or above the earth's surface. Also known as atmospheric pressure or barometric pressure.

is the weight of the air that makes up our atmosphere exerts a pressure on the surface of the earth. This pressure is known as atmospheric pressure. Generally, the more air above an area, the higher t [..]

atmospheric pressure the (amount of) pressure of air within something ''The air pressure in the rear tyres should often be higher than in the front tyres.''

See atmospheric pressure.

The weight of air above a given point, measured with a barometer. AIR POLLUTION