Multiple choice

Sky appears blue due to which scientific phenomenon?

  1. Interference of light.

  2. Dispersion of light.

  3. Refraction of light.

  4. Scattering of light.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The sky appears blue due to Rayleigh scattering - shorter blue wavelengths scatter more than longer red wavelengths when sunlight hits atmospheric molecules. This scattered blue light reaches our eyes from all directions.