Her eyes were like two brown circles with big black dots in the center. Her vocabulary was as bad as, like, whatever. The politician was gone but unnoticed, like the period after the Dr. on a Dr Pepper can. The red brick wall was the color of a brick-red Crayola crayon. The sky is blue because of a process called Rayleigh scattering.
Light arriving from the sun hits the molecules in the air and is scattered in all directions.
The amount of scattering depends dramatically on the frequency, that is, the color of the light. Blue light, which has a high frequency, is scattered ten times more than red light, which has a lower frequency. This same process also explains the beautiful red colors at sunset. When the sun is low on the horizon, its light has to pass through a large amount of atmosphere on its way to us. During the trip, blue light is scattered away, but red light, which is less susceptible to scattering, can continue on its direct path to our eyes.