Earth's sky is blue during the day because:

Question

Quizplus · Accepted Answer

The sky appears blue during the day because the molecules in Earth's atmosphere scatter blue wavelengths of light more than they scatter other colors. This is known as Rayleigh scattering. As sunlight enters the atmosphere, it collides with gas molecules and scatters in all directions. Blue light is scattered more than other colors because it has a shorter wavelength and is more easily affected by the small gas molecules in the air. This is also why the sun appears yellow or orange at sunrise and sunset - when the sunlight must pass through more of the atmosphere to reach our eye, more of the blue light is scattered away, leaving us with the longer-wavelength colors of the sunrise or sunset.

Earth's Sky Is Blue During the Day Because