Why is water vapour also considered a greenhouse gas?
Answer and explanation
Correct answer: Because it absorbs thermal infrared radiation emitted by Earth and helps retain heat in the atmosphere
Option B is correct because water vapour absorbs part of the longwave, or thermal infrared, radiation emitted by Earth’s surface. It then re-emits energy in different directions, including back toward the surface, which reduces the rate at which heat escapes to space. This is the greenhouse-gas concept. Water vapour is not the main gas for respiration, is not chemically inert in the relevant sense, and its greenhouse role does not depend on being heavier than every other gas.
Frequently asked questions
What is the correct answer to this question?
Because it absorbs thermal infrared radiation emitted by Earth and helps retain heat in the atmosphere
Why is this the correct answer?
Option B is correct because water vapour absorbs part of the longwave, or thermal infrared, radiation emitted by Earth’s surface. It then re-emits energy in different directions, including back toward the surface, which reduces the rate at which heat escapes to space. This is the greenhouse-gas concept. Water vapour is not the main gas for respiration, is not chemically inert in the relevant sense, and its greenhouse role does not depend on being heavier than every other gas.
Which subject and chapter does this question cover?
This is a Class 11 Accountancy question. Chapter: Theory Base of Accounting. Topic: Covers GAAP.
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