Simple Space and Flight Experiments with Everyday Materials (Simple experiments with everyday materials) - Tapa dura

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Long before planes existed, humans dreamed of flying. Examine the science and test the theories behind aviation, using everyday objects like cardboard, scissors, empty spools, and a ruler. See how air currents work, make "Twirly-Whirlies" that demonstrate how helicopter rotors operate, and discover the power of centrifugal force. Create paper airplanes, gliders, and kites. While you're having fun, you're gaining a real understanding of Bernoulli's principle and Newton's law of gravity. 128 pages, 75 b/w illus., 5 3/8 x 8 1/4.