This year the theme for British Science Week was 'Our Diverse Planet' and this link https://www.britishscienceweek.org/ to the website has lots of exciting ideas and things to learn about.  British Science Week combines science, technology, engineering and maths and is a great way to find out about our diverse planet! 

Here is a simple experiment you can try at home:

 

You will need

A flat tray (like a cookie baking tray)
Food colouring (at least 3 different colours)
Whole milk – low fat milk will not work for this experiment
Liquid soap used for washing dishes

What to do

Carefully pour the milk into the tray so that it just covers the bottom

Add about 6-8 drops of different coloured food colouring onto the milk in different spots

Add about 5 drops of the liquid soap onto the drops of food colouring and watch the show!

To clean up, simply pour the coloured milk down the drain. (don’t drink it!)

How does it work?

So you know where the colour comes from, but why milk and liquid soap? The main job of dish soap it to go after fat and break it down. Usually the fat is on dishes from the food we eat, but fat is also in whole milk. When you drop the liquid soap onto the tray, it tried to break down the fat in the milk. While it was doing that, it caused the colours to scatter and mix creating a very colourful display. Have fun!