Rainbows are curved bands of colors that appear in the sky when sunlight shines during or after rain.

They happen because of the way light interacts with water droplets in the air.

When sunlight passes through raindrops, it bends and reflects the light, separating it into its many colors.

Sunlight looks white, but it is actually made up of many colors all mixed together.

These colors include red, orange, yellow, green, blue, indigo, and violet.

When sunlight reaches a raindrop, the light bends as it goes in.

This bending of light is called refraction.

Then, the light reflects off the inside surface of the droplet before bending again as it comes out.

This process spreads the light into separate colors, like creating different paints from one color.

All the raindrops in the sky are doing this at the same time.

When you stand in the right spot, with the sun behind you and the rain in front of you, you can see an arc of colors form a rainbow.

The colors always appear in the same order: red, orange, yellow, green, blue, indigo, violet.

A simple way to remember this order is by using the name ROYGBIV.

A rainbow is not a solid object.

It is made of light, which means you cannot touch it or walk to its end.

The location of a rainbow changes based on where you are standing.

This beautiful display shows us that light can create amazing colors when conditions are just right.

Did you know?

The same process that creates rainbows can also create halos around the sun or moon! Also, rainbows can appear at night; these are called moonbows.

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