How do rainbows occur?

1.Rainbows happen when sunlight and rain combine in a very specific way.

2. The beams of sunlight separate into the colours we see in the rainbow as they enter a raindrop.

3.  Sunlight is actually made up of different colours that we don’t usually see.

4.  When a beam of sunlight comes down to Earth, the light is white.

5.  But, if the light beam happens to hit raindrops on the way down at a certain angle, the different colours that make up the beam separate so that we can see them — in the form of a rainbow.

6. There are seven colours in the rainbow, red, blue, green, orange, yellow, indigo and violet.