What is the most appropriate reason for pressure and density decreasing rapidly in the troposphere?
Answer and explanation
Correct answer: The weight of the air column above decreases with height
Atmospheric pressure is the force exerted by the weight of the air above a unit area. As altitude increases, the air column above becomes shorter and contains fewer molecules, so its weight and the density of surrounding air decrease. Therefore, option A is correct. Earth’s shape, disappearing oceans, and a reversal of the Sun’s direction do not explain this vertical pressure pattern.
Frequently asked questions
What is the correct answer to this question?
The weight of the air column above decreases with height
Why is this the correct answer?
Atmospheric pressure is the force exerted by the weight of the air above a unit area. As altitude increases, the air column above becomes shorter and contains fewer molecules, so its weight and the density of surrounding air decrease. Therefore, option A is correct. Earth’s shape, disappearing oceans, and a reversal of the Sun’s direction do not explain this vertical pressure pattern.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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