How are Rainbows formed?

This week for writing we were writing an explanation writing our learning intention was to use cause and effect. I wrote about how rainbows are formed? 
Have you done an a explanation writing?
Blog ya later

Here's my writing have a look!!

 How are Rainbows formed?

A rainbow is a multi-coloured arc in the sky. Did you know white light is made up of 7 colours?

Rainbows can only be seen when rain and sun happens at the same time. Raindrops act as small prism! Put a mirror in a glass of water in a dark room. Shine a torch and place a paper over it and it breaks up the sun's white light into a rainbow the 7 colours. Light comes in and bends to form different light rays! No 2 people see a rainbow the same ,beeave everyone is at a different angle to see the prims in the raindrops. Rainbows can be seen in mist fog and spray.