Airplanes

click the picture!	Four examples to help students understand how an airplanes stays up in the sky.
	Drag: Why does a drag car have a parachute. Make your own parachute out of tissue paper, string and a paper clip for weight. Race your friends by dropping paper clips with and without the parachute. You will be surprised how well drag works.
Gravity: How far can you throw a ball. It doesn't go very far because the earth's gravity pulls is back down again.	click the picture!
	Thrust: If you blow up a balloon without tying the neck and let it go the air will rush out of it very quickly. When the air goes out one way it pushed the balloon the other way. This is the way rockets work and it is one of the ways an airplane stays in the sky.
Lift: Take an standard sheet of typing paper and hold in curled against your chin and blow over the top of it. The paper will magically appear to rise. This is lift!	..... or next time you go rollerblading, in a car or boat put out your hands and feel them LIFT! Visit my space and car site!

Why do airplanes fly?