When you rub a balloon on wool or your hair it creates static electricity. Static electricity is negatively charged particles (called electrons) jumping over to positively charged objects. When you rub the balloon against your hair (the most fun option) it becomes negatively charged. It has taken some of the electrons from the hair and left them positively charged.
The positively charged hair is attracted to the negatively charged balloon and starts to rise up to meet it.
To show how static electricity works we tried out a variety of experiments. We got some balloons and rubbed them on our jumpers, the carpet and hair to negatively charge them. We then tried to attract a variety of items such as tissue paper, straws, cans and salt and pepper. We also observed during our experiments that some students were great conductors of electricity!
A bubble is just air wrapped in soap film. Soap film is made from soap and water (or other liquid). The outside and inside surfaces of a bubble consist of soap molecules. A thin layer of water lies between the two layers of soap molecules, sort of like a water sandwich with soap molecules for bread. They work together to hold air inside.
For the first science club activity we looked bubbles and how we could blow the best bubble. After discussing what we knew about making bubble mixture and the scientific concept behind bubbles, we got to all have a turn blowing bubbles. We each had a pipette with the end cut off to blow through and tried to work out the best way to blow a bubble. We also experimented with what happened when we added more dishwashing liquid to the solution.
We then came back together to think about what would happen if we added glycerol to the solution. Ask your child what they observed!