- Static Electricity
- Positive and Negative Charges
- Energy is a property of many substances and is associated with electricity.
Energy is transferred in many ways (Standard B.3.1)
Prior knowledge & experience:
Students should already know what atoms are and the parts of an atom
Holding a balloon up the wall, what happens if you let go? Now, after rubbing the balloon against wool, what happens to the balloon when you let go?
The first balloon should fall, the second balloon should stick to the wall
Common misconception is that balloons are not sticky, therefore they shouldn't be able to stick to a wall.
- Blow up a balloon and hold it up to a wall. The balloon should fall to the ground when you let go.
- Rub that same balloon against wool, or your hair, or a student's hair.
- Take that balloon and again hold it up to the wall. It should now stick to the wall where you held it.
- You could also hold the balloon up to a slow stream of water from a faucet. Do not let the balloon touch the water, but get it pretty close. The water will start to bend away from the balloon.
Photographs and Movies
Static Electricity-- By: Science Made Simple
PHET Demonstration of Static Charges