Question

During s sunrise and sunset sky appears red ‚ while during the day it appears blue Explain these natural phenomenol

Answer 1

This is due to refraction of sunlight due to our atmosphere. During sunrise and sunset, sun rays has to travel farthest distance and thus gets refracted by our thick atmosphere giving us red/orange color because they are having highest wavelength. During afternoon, sun rays travels shorter distance as compared to any other time of day, hence show blue colour having minimum wavelength

Answer 2

Answer: A natural phenomenon is the scattering of light. During sunrise and sunset, light from the Sun near the horizon passes through thicker layers of air and larger distance in the earth’s atmosphere. Most of the blue light and shorter wavelengths are scattered away by the particles and most of the red light of a longer wavelength which is least scattered reaches our eyes. This gives rise to the reddish appearance of the Sun.

During the day, light from the Sun overhead would travel a relatively shorter distance and only a little of the blue and violet colours are scattered. The scattered blue light enters our eyes and the sky appears blue.