GK
WORLD GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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absorb Earth’s outgoing infrared radiation
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reflect Earth’s incoming infrared radiation
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magnify ultraviolet radiation in the atmosphere
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block the Sun’s infrared radiation
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Detailed explanation-1: -The effect of this is to warm the Earth’s surface and the lower atmosphere. A greenhouse gas is called that because it absorbs infrared radiation from the Sun in the form of heat, which is circulated in the atmosphere and eventually lost to space.
Detailed explanation-2: -These gas molecules all are made of three or more atoms. The atoms are held together loosely enough that they vibrate when they absorb heat. Eventually, the vibrating molecules release the radiation, which will likely be absorbed by another greenhouse gas molecule. This process keeps heat near the Earth’s surface.
Detailed explanation-3: -Green-house gases like water vapour and carbon dioxide are absorbers of long wave infrared radiations from earth. This heats the lower atmosphere. The warmed atmosphere emits longwave radiation, some of which radiates toward the Earth’s surface, keeping it warm and generally comfortable.