SSC
WORLD GEOGRAPHY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What do greenhouse gases do?
|
|
absorb Earth’s outgoing infrared radiation
|
|
|
reflect Earth’s incoming infrared radiation
|
|
|
magnify ultraviolet radiation in the atmosphere
|
|
|
block the Sun’s infrared radiation
|
Explanation:
Detailed explanation-1: -Water vapor, carbon dioxide, methane, and other trace gases in Earth’s atmosphere absorb the longer wavelengths of outgoing infrared radiation from Earth’s surface. These gases then emit the infrared radiation in all directions, both outward toward space and downward toward Earth.
Detailed explanation-2: -This ability to absorb and re-emit infrared energy is what makes CO2 an effective heat-trapping greenhouse gas. Not all gas molecules are able to absorb IR radiation.
Detailed explanation-3: -Adding more greenhouse gases decreases the amount of infrared radiation energy leaving the atmosphere.
There is 1 question to complete.