A push from the wind can make a kite fly and a sailboat glide across the water---and it can do other things, too. It can even light lamps and pump water! If you live in a place where a strong,...
Energy from the sun
Someday you may live in a house that keeps itself warm with a tankful of \"sunshine"--- even on cloudy days and chilly nights. Instead of turning on a furnace, you'll use saved-up heat from the sun. ...
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Energy from electricity Snorkel and Scorch are terribly sad. For two hundred years they worked as palace dragons. They carried wood for fires, huffed flames into fireplaces, and lighted candles in...
Energy from burning
Little Nancy Etticoat, With a white petticoat, And a red nose; She has no feet or hands, The longer she stands, The shorter she grows. Mother Goose Who is Nancy Etticoat? You've seen her often,...
Energy from movement
Poor old Bristlebones! His pirate ship has sailed away and he's stranded on a tiny island. He can think of only three ways to get help. He can fly a kite and hope somebody on another ship sees it. He...
How do you make a push?
Opening doors, playing baseball, running a race, practicing for a school play---you really keep moving. How does your body keep going? What makes you move? You keep moving in almost the same way a...
Full of Energy
Full of Energy Full of Energy
What keeps them up?
How do an airplane's wings help it stay in the air? What keeps a satellite up? Airplane wings have a special shape. They are curved on top and straight on the bottom. This shape is what helps lift...
A push in two directions
Blowing up a balloon takes a lot of huffing and puffing. But if you let the balloon go, the air rushes out---and the balloon takes off like a rocket! What makes it fly? When you blow up a balloon,...
A tug from the earth
Imagine floating through the air, standing on the ceiling, or leaping upstairs in one big bound! An astronaut traveling through space can do all of these things. But on the earth, you can't. You...