The sky appears blue because the earth's atmosphere __________?

  • A. Scatters blue light
  • B. Reflects blue light
  • C. Transmits blue light
  • D. Has actual blue cover

Explanation

Air molecules scatter the shorter blue wavelengths more strongly than the longer red wavelengths, so blue light reaches the observer from many directions. The atmosphere does not have a blue covering and the effect is not ordinary reflection.

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