Question

why is the sky blue ?

Answer 1

The sky is blue bcz among seven colors the blue spreads the most . So when the light gets contact with water particles of the air , the light spreads into seven colors and blue being spread the  most . This the sky appears blue.

Answer 2

A clear cloudless day time sky is blue because molecules in the air sattet blue light from the sun more than then scatter red light . Whenua we look t
toward the sun at sunset we see red and orange scatter because the blue light has been scattered out and away from the line of sight .