Rainbows are formed when light from the sun is scattered by water droplets (e.g. raindrops or fog) through a process called refraction. Refraction occurs when the light from the sun changes direction when passing through a medium denser than air, such as a raindrop.

What happens during a rainbow?

A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the Sun.

How are rainbows formed step by step?

1. Sun Rays Strikes Raindrop. …
2. Some of the sunlight is reflected. …
3. Rest of Light Gets Refracted. …
4. White Light Splits into Different Colors. …
5. Lights Get Reflected Behind the Rain Drop. …
6. More Refraction Takes Place. …
7. Color Forms With More Dispersion.