Rainbows happen when sunlight and rain combine
in a very specific way.
The beams of sunlight separate into the colours we see
in the rainbow as they enter a raindrop. Sunlight is
actually made up of different colours that we don't usually
see. When a beam of sunlight comes down to earth,
the light is white. But if the light beam happens to hit the
raindrops on the way down at a certain angle, the
different colours that make up a beam, separate so we can
As you look into the sky, wavelengths of light associated
with a specific colour arrive at your eye. When you look
up to the sky you will also see ROYGBIV known as red,
orange, yellow, green, blue, indigo, and violet. A rainbow
has seven colours because water droplets in the
atmosphere break sunlight into seven colours.
You can see a rainbow when the sun is located right