The sky appears blue because the earth's atmosphere __________?
Correct answer: A. Scatters blue light
- 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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About Environment and Atmosphere
Environmental science covers ecosystems, food chains and webs, energy flow, biogeochemical cycles, biodiversity, natural resources and population effects. Atmospheric study includes the layers and composition of air, weather and climate, greenhouse gases, global warming, ozone depletion, acid rain and pollution, with climate change distinguished from ordinary weather variation.
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