The sunlight that reaches the earth’s atmosphere is scattered in all directions by the gases and dust particles present in the atmosphere.
- The blue colour is scattered more and hence the sky appears blue.
- The reason for more scattering of blue colour is that the wavelength of the blue light is shorter than the other light.
- So blue light is scattered in all directions by the tiny molecules of air in Earth’s atmosphere.
- This is the reason sky appears blue.