What is one major basis for considering water vapour a temperature regulator of the atmosphere?
Answer and explanation
Correct answer: It can absorb and re-emit longwave radiation
The governing concept is radiative regulation through the greenhouse effect. Earth’s surface emits energy mainly as longwave infrared radiation. Water vapour absorbs portions of this radiation and re-emits energy in different directions, including back toward the surface, influencing atmospheric heating and cooling. It also participates in clouds and latent-heat transfer, but the option directly states its radiative basis. Colour, gravity, and nitrogen liquefaction are irrelevant, so A is correct.
Frequently asked questions
What is the correct answer to this question?
It can absorb and re-emit longwave radiation
Why is this the correct answer?
The governing concept is radiative regulation through the greenhouse effect. Earth’s surface emits energy mainly as longwave infrared radiation. Water vapour absorbs portions of this radiation and re-emits energy in different directions, including back toward the surface, influencing atmospheric heating and cooling. It also participates in clouds and latent-heat transfer, but the option directly states its radiative basis. Colour, gravity, and nitrogen liquefaction are irrelevant, so A is correct.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting.
