Question

Air is made-up Of gas particles. These particles exert pressure on every object they collide against. This pressure is known as air pressure. which is the following statement about air pressure is true?

A. Air pressure decreases as altitude increases

B. Warm air tends to have higher air pressure than cold air.

C. The atmosphere's air pressure does not vary.

D. Air pressure increases as altitude increases.

Answer 1

A. Air pressure decreases as altitude increases.

Explanation: As altitude rises there are fewer air molecules above a given area, so the weight of the air column (and thus the pressure) falls.