a strip of colour stretched across the sky...

RAINBOWS!

Really Old Yaks Gamble Bread In Vain

This is my random mnenomic that helps me remember the seven colours of a rainbow, these colours being RED ORANGE YELLOW GREEN BLUE INDIGO VIOLET.

What are these colours? The colours of a rainbow? What is a rainbow?

Well, sunlight is made of the seven colours of a rainbow and when raindrops refract or bend the light, it is split and shows up as seven different colours. But this can only happen when rain is in front of you and the sun is behind you. Some say that seeing is believing and with rainbows you will have to live with that, because no matter how fast you run, you will never reach a rainbow. That is because when you reach where it was supposed to be, you will now be looking at the reflection of the light off the rain from a different angle

Make a rainbow! -http://www.suzy.co.nz/SuzysWorld/Factpage.asp?FactSheet=216
What you need:
A garden hose
A sunny day
A place in the garden that needs watering.
What you do:
Turn the garden hose on and water the garden and see if you can see a rainbow in the water as it falls to the ground. Where is the sun? Is it behind you? Keep moving until it is and see if that makes a difference?

sorry guys, i couldn't get a pic, it wouldnt let me for some reason :)