Watercare

On Monday we had Sally from Watercare talk about water and how water is recycled.
After Sally was done talking to us she said that we would be creating an experiment .
We had to get into a group of 4 and had to mix salt with fresh water into 3 cups.When we were done we had to put food colouring in the 3 cups and 1 with nothing in it. Sally said that number 1 could go first so I grabbed a tube and dropped it into the yellow colour then to the red and last the blue I learnt that salt water is dense and if you were to got in the sea you would float but in fresh water you would sink.