Why does air pressure decrease with height?
Answer and explanation
Correct answer: Because the weight of the air column above decreases upward
Air pressure is the force exerted by the weight of the air above a given surface. Near sea level, a person or object supports a tall, heavy air column, so pressure is greater. As altitude increases, the air column above becomes shorter and contains less mass; therefore its weight and pressure decrease. Option A is correct. The other options incorrectly refer to oceans, soil, or a universally zero temperature.
Frequently asked questions
What is the correct answer to this question?
Because the weight of the air column above decreases upward
Why is this the correct answer?
Air pressure is the force exerted by the weight of the air above a given surface. Near sea level, a person or object supports a tall, heavy air column, so pressure is greater. As altitude increases, the air column above becomes shorter and contains less mass; therefore its weight and pressure decrease. Option A is correct. The other options incorrectly refer to oceans, soil, or a universally zero temperature.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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