In which layer of the atmosphere is air density the highest?
Answer and explanation
Correct answer: Troposphere
Air density is greatest in the troposphere because it is closest to Earth’s surface and is compressed by the weight of the atmosphere above it. Hence, option D is correct. As altitude increases, pressure and density generally decrease, so the mesosphere, thermosphere and exosphere contain progressively fewer particles. Temperature and density are different properties, so a hotter upper layer is not necessarily denser.
Frequently asked questions
What is the correct answer to this question?
Troposphere
Why is this the correct answer?
Air density is greatest in the troposphere because it is closest to Earth’s surface and is compressed by the weight of the atmosphere above it. Hence, option D is correct. As altitude increases, pressure and density generally decrease, so the mesosphere, thermosphere and exosphere contain progressively fewer particles. Temperature and density are different properties, so a hotter upper layer is not necessarily denser.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Introduction to Accounting.
