General Science • PhysicsMedium
What is the primary reason for the blue color of the clear sky?
A. Absorption of blue light by the ozone layer
B. Reflection of light from ocean waters
C. Rayleigh scattering of shorter wavelengths of sunlight by atmospheric gases✓ Correct Answer
D. Emission of blue light by nitrogen molecules
💡 Solution & Explanation
Rayleigh scattering causes shorter wavelengths of light, such as blue and violet, to scatter much more efficiently than longer wavelengths when interacting with gas molecules. Ozone absorption or ocean reflection are not the primary drivers of daytime sky color.
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