Planes, Gliders, Helicopters: and Other Flying Machines by Terry J. Jennings

Planes, Gliders, Helicopters: and Other Flying Machines

Terry J. Jennings

40 pages first pub 1993 (editions)

informative medium-paced
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Description

Children will learn how hot air helps balloons to fly...why the shape of a wing is important to flight...and how hang gliders glide and helicopters hover.

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