Electricity traveling through the thin wire of a light bulb makes the bulb glow. When you turn on a lamp, electricity makes the bulb light up. But the whole bulb isn't really glowing. The part...
Starting and stopping the push
You want your electric clock to run day and night. But you wouldn't want your doorbell ringing all the time! Things like doorbells, lamps, and radios work only when you turn them on. Most things...
What makes the push?
Electricity is a push in a wire---the push of moving electrons. But what makes the electrons start to push through the wire? Where does electricity come from? Electricity is made in a kind of...
Current conductors
Materials What kinds of materials will conduct, or - bell wire (6 feet; 1.8 meters) - dry cell (No. 6) - flashlight bulb (1.5 volts) - knife - porcelain or plastic socket (small, for...
A push in a wire
should go. Click! The minute you turn on a lamp or a radio, something happens---a light bulb glows or sounds come out. But electricity doesn't jump into the lamp or the radio. It flows through...
Making sparks fly
Do sparks fly when you pull your jacket off? Do you get a crackling shock when you touch a doorknob? These things happen because you've been collecting electricity! The sparks and crackles are...
What is electricity?
When you turn on a light, ring a doorbell, or plug in a coffee pot, you start a parade---but it's a parade you can't see! The parade is a parade of moving, pushing electrons (ih trahnz). The energy...
Currents and Sparks
Currents and Sparks Currents and Sparks
Putting light to work
What's on TV tonight? Why, nothing but thousands of lines full of millions of spots of light. That's what makes up the program you are watching! Part of a TV camera makes an electric copy of the...
Stand-out pictures
The pages in this book are flat and smooth. So are the pictures on the pages. But if you look at the picture pairs on the opposite page in a special way, the things in them will seem to stand out...
