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Air pressure is the pressure of what?

Answer and explanation

Correct answer: Air

Direct answer: Option B, air. Air pressure is the force or pressure produced by the weight of the column of air above a surface. Gravity pulls air downward, so the air presses on Earth’s surface and on objects. Pressure is measured with an instrument called a barometer. B is correct because the term specifically means pressure exerted by air. A, sea waves, are movements of water and may exert water pressure, but they are not air pressure. C, soil, can exert its own pressure but is not the substance named here. D, trees, are objects and do not produce the atmospheric pressure meant by the question. Memory cue: atmospheric pressure = the weight of air pressing down.

Related tags

GeographyClimatePressure

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