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  1. The percentage of sun's radiation reflected back into space is about

    2. A.

     36 percent
    B.

     47 percent
    C.

     17 percent
    D.

     None of the above

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    Answer : Option A

    Explanation :

    Snow, ice, and clouds have high albedos (typically from 0.7 to 0.9) and reflect more energy than they absorb. Earth's average albedo is about 0.3. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed.

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