This week’s experiment is quick and simple but sure to amaze!
You will need:
- A balloon
- An indoor tap
- Clean dry hair
- Turn the tap on so there is a very thin but constant stream of water flowing
- Rub the balloon on your hair until you form static (about 10 seconds, until your hair begins to stand on end)
- Slowly bring the balloon close to the flowing water while being careful not to actually touch the water
- Watch the water bend towards the balloon!
When you rub the balloon on your hair, tiny electrons are collected on the balloon. These electrons have a negative charge. This causes the balloon itself to have an overall negative charge, therefore it is attracted to things with a positive charge (opposites attract!). The flow of water has a positive charge, therefore the attraction is strong enough to pull the water towards the balloon.
This is known as static electricity!