When sunlight hits a rain droplet, some of the light is reflected. The electromagnetic spectrum is made of light with many different wavelengths, and each is reflected at a different angle. Thus, spectrum is separated, producing a rainbow.

How is a rainbow formed short answer?

Rainbows are formed when light from the sun is scattered by water droplets (e.g. raindrops or fog) through a process called refraction. ... Once the refracted light enters the raindrop, it is reflected off the back and then refracted again as it exits and travels to our eyes.

How Rainbows get their color?

Rainbows appear in seven colors because water droplets break sunlight into the seven colors of the spectrum. You get the same result when sunlight passes through a prism. ... The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.