How does a rainbow get its color?

Answer 1

The light from the sun goes through the water vapor in the air. The vapor acts like a prism, projecting the spectrum (the colors) of the rainbow into the sky.

Answer 2

A rainbow gets its colors due to the dispersion of sunlight by raindrops in the atmosphere. Each color in a rainbow corresponds to a different wavelength of light being refracted at slightly different angles, creating the spectrum of colors we see.

Answer 3

A rainbow's colors come from rain drops acting as a prism. This separates white light, which consists of all the colors, into the distinct stripes you see in a rainbow.