Did you know that:

The elephant is the only animal to have four knees

It is impossible to sneeze with your eyes open

A flea can jump 200 times its own length

You blink 25 times every minute

Dogs sweat through their paws

Turtles have no teeth

Most of what we call tastes are really smells

A tarantula is one of the few spiders unable to spin a web

The average pencil will draw a line 58 kilometres long

Or…… did you know……………….

When white light travels from one medium to another (air to water), the light waves bend and it is slowed down. As the waves slow down the light is split into different colours.

This is why we can see rainbows on a sunny day when it is raining.

As the light travels through the raindrops it is slowed down enough for us to see the different colours.

Although we can only see 7 colours white light is actually a continuous spectrum of a whole range of colours.