Science Week Floating Coloured Water

Tracey and James did an experiment using Water and salt. Here is their experiment.

1. In one glass put some salt and add warm water.
2. Stir until salt is dissolved
3. In another glass put some food colouring and add warm water.
4. Slowly pour the coloured water into the salt water.

Now watch and see how the coloured water sits on top of the salt water. 

This is because salt water is heavier than tap water.