Question

Why does the sky appear blue on a clear day ?

Answer 1

Explanation:

Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time. Closer to the horizon, the sky fades to a lighter blue or white.

Answer 2

Because out of the seven colours of the rainbow, the blue colour spreads more in the sunlight.