What are electrical signals?

Electrical signals are like messages that travel through wires or inside your toys, telling them what to do.

Imagine you have a flashlight. When you turn it on, something happens inside, a little flow of energy starts moving from the battery to the light bulb. That movement is electricity, and when it moves in a pattern, like turning on and off quickly or going in waves, that's an electrical signal.

Think of an electrical signal as a bouncing ball inside a tube. When the ball hits one end, it bounces back, over and over again. This is similar to how electricity moves through wires when you send messages from your phone or radio. The ball’s movement is like the current in the wire.

Or imagine talking on the telephone. Your voice makes vibrations that travel along the line, and they become sound at the other end. Electrical signals are kind of like those vibrations, they carry information through wires or inside your body when you send messages from your brain to your muscles. It's how your nerves work too!

So, electrical signals are just special kinds of energy flow that help things communicate, like your phone, your toys, and even your body!