Blast off into the wacky world of gadgets! Have you ever wondered what makes airplanes fly, how boats float, or why your doorbell works? Would you like to build your own flying, floating, diving, spinning, howling, scooting objects? Are you looking for a terrific science project that moves? If you answered "Yes!" to any of these questions, then "Rocket Science" is for you. It shows you the science behind how things work by teaching you how to build a rocket boat, kaleidoscope, mousetrap car, stethoscope, compass, fruit-powered battery, and lots of other wonderful gizmos. All of the projects are safe and easy to make out of stuff you can find around your house. This amazing book covers a wide variety of science topics, including mechanics, air power, water power, electricity, magnetism, chemistry, acoustics, and optics.