Electricity

Lightning striking Telstra tower in Canberra.
Source: Image courtesy of Marty Pouwelse Photography

Have you ever wondered...

• how are messages sent through the nervous system in your body?
• what lightning is?
• why do you sometimes get zapped when you step out of the car?
• what energy comes out of a battery?
• why your hair sometimes flies out and crackles when you brush it?
• what type of energy makes an ipod work?

The answer to all of these questions is electricity.