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Q. |
Cloudy nights are wanner compared nights, because clouds mainly – |
A. | Absorb heat from the atmosphere send it towards earth |
B. | Prevent cold waves from the sky descending on earth |
C. | Reflect back the heat given by earth |
D. | Produce heat and radiate it toward earth |
Answer» C. Reflect back the heat given by earth | |
Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body. |
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