For Science week, first class used shaving foam to make their own colourful rain… It’s the rain in a jar experiment…it is messy but fun. We may have gotten a little too carried away with how much foam to use – teachers fault 🙂
The food colouring moves slowly through the foam but it doesn’t mix with it… the foam is so thick that the food colouring stays as drops and slowly passes through it. The foam acts like a solid.
But once the drops of food colouring pass into the water they can move more quickly so they streak through it, and look like rain.
The water is a liquid and the food colouring will eventually mix with it turning all the water blue.
