What effect does gravity have on the vertical availability of gases in the atmosphere?
Answer and explanation
Correct answer: It helps keep most air concentrated near Earth's surface
Gravity pulls atmospheric molecules toward Earth, so the air is compressed most strongly near the surface. As altitude increases, pressure and density generally decrease, although gases remain mixed through the lower atmosphere. Therefore, option C is correct. Option A reverses gravity’s effect, option B ignores the decrease with height, and option D incorrectly limits the effect to ozone alone.
Frequently asked questions
What is the correct answer to this question?
It helps keep most air concentrated near Earth's surface
Why is this the correct answer?
Gravity pulls atmospheric molecules toward Earth, so the air is compressed most strongly near the surface. As altitude increases, pressure and density generally decrease, although gases remain mixed through the lower atmosphere. Therefore, option C is correct. Option A reverses gravity’s effect, option B ignores the decrease with height, and option D incorrectly limits the effect to ozone alone.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
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