Goodwill Publishing House
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Did you ever wonder how an airplane stays up in the sky, or how a rocket ship works? Find out! Using just everyday objects like card-board, thumbtacks, scissors, and a ruler, you can do simple, fun experiments that show the science behind aviation.
• It's a breeze to find out how air currents affect planes.
• Make "Whirlybirds" and "Twirly-Whirlies," to see how helicopter rotors operate.
• You're not just "spooling around" when you test the power of centrifugal force-with the help of an empty spool!
• It's hot news! If you've got a balloon, you can measure air as it warms up.
(You'll want a grown-up to help you with this one.)
• Go "Flap-Happy" with super model airplanes that turn on your command.
And while you're having a great time, you're effortlessly gaining a real understanding of important ideas=-like Newton's law of gravity.