Making a simple toy out of a balloon and an aluminum can
How to make a toy using a balloon and a soda can
Now presenting: a cool trick with a balloon and static electricity!
- Conduct this experiment away from sensitive electrical appliances.
- Do not perform this experiment if you have a pacemaker.
- inflated balloon;
- aluminum can.
Rub a balloon vigorously on your hair to generate an electric charge. Pull it away from your hair slowly and note that your hair is attracted to the balloon. Bring the charged balloon close to an empty aluminum can. It is important that the balloon not touch the can for the duration of the experiment.
Friction between two objects causes the transfer of electrons from one object to the other. The item that donates electrons gains a positive charge, while the item that accepts electrons gains a negative charge. In this instance, the balloon's surface accepts some electrons and becomes negatively charged. This creates an electric field around the balloon. This field acts on the aluminum can, causing the can’s electrons to redistribute across its surface. The surface closest to the balloon becomes positively charged, while the far side of the can becomes negatively charged. This results in an attractive force that draws the can to the balloon. This phenomenon of charge redistribution is called electrostatic induction.