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Day Light, Night Light

Day Light, Night Light

Moonlight is really sunlight! Did you know that the moon doesn't make its own light? Instead, it receives light from the sun and reflects it to us...
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Energy Makes Things Happen

Energy Makes Things Happen

Did you know that energy comes from the food you eat? From the sun and wind? From fuel and heat? You get energy every time you eat. You transfer...
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Forces Make Things Move

Forces Make Things Move

There are forces at work whenever you throw a ball, run up the stairs, or push your big brotheroff the couch. Want to learn more about the forces...
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Gravity Is a Mystery

Gravity Is a Mystery

Everybody knows that. But what is it that pulls everything from rocks to rockets toward the center of the earth? It's gravity. Nobody can say exactly...
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Switch On, Switch Off

Switch On, Switch Off

It seems like magic! It's not -- it's electricity. But how does a light actually work? In this clear and simple book learn all about electricity, how...
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What Makes a Magnet?

What Makes a Magnet?

Will a magnet pick up a paper clip or a feather? The answer is, just the paper clip. Magnets only pick up things that contain bits of iron. In this...
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Where Does the Garbage Go?

Where Does the Garbage Go?

Follow that garbage truck! ...to the landfill to see how trash keeps piling up...to the incinerator to see how trash can be turned into energy ......
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