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How do airplanes stay up in the air?
- tina (age 14)
Airplanes stay up in the air because they have wings. The wings have a
special shape that makes the air move over the top faster than
underneath. Since the air moves at different speeds, the wing lifts up.
This is called the Bernoulli effect.
Hold a piece of paper up to your mouth and blow over the top. The
air going over the top is moving fast since you're blowing. The air
underneath is not moving much. You can see the paper lift up!
Airplanes move very fast through the air. They have to or else the wings would not be able to keep them up in the air.
(republished on 07/30/06)
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