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What is a static roller? Does it sound like the name of a band? Or does it describe the sound of a band you are familiar with? No? Good.

Our static roller experiment gives you insight into some of the tiniest particles known, electrons.

• An empty soda can
• A blown-up balloon
• A head of hair!

1. Place the can on its side on the floor or on a table. Any smooth space will do. Hold it until it stays still.
2. Now, vigorously rub the balloon over your hair until it makes your hair stand up.
3. Hold the balloon one inch in front of the can. The can will roll even if you don’t touch it.
4. Switch directions, get some momentum. You’re using static electricity to create motion!

What Happened:

Static electricity has been created when you rubbed the balloon over your hair. This means that the electrons have loaded up on the balloon. These electrons on the balloon attract the protons that are in the metal of the can. This attraction causes the can to move.