WHY? The faster the air passes by the ball, the less pressure it exerts upon the ball. The air pressure above the ball is less than the pressure under it, so the ball is held up by air. The pressure of moving air explains the upward lift on the wings of the bird. When the air flows faster over the top of the wing than below, there is an upward push called Lift. ASSESSMENT: Can the student communicate what they observed?

Student is able to communicate that as air speeds up, pressure on the bird's wing decreases and the upward lift of the wing is created. Student is able to communicate that as the air speeds up there is different pressure on the wing and the wing will achieve lift. Student is able to communicate that as the air speeds up lift is possible. Student is able to communicate that the speed of the air will have an affect on a wing.

Web Hosting Provided By The National Business Aviation Association.

Explore Space ... Not Drugs!
Hear what astronauts have to say about staying drug-free.
Last modified: Sun Aug 10 18:00:59 PDT 1997

Copyright © 1997 by Cislunar Aerospace, Inc. All Rights Reserved.