Book excerpt: Physics is most simply put, the study of matter and energy and the interaction between the two. How did the Universe begin? You might not have the answer to that question! However, you can pull off these cool physics experiments to get your kids thinking, observing, questioning, and experimenting. Easy Physics Experiments includes: * Camping Science With Cans * Popsicle Stick Catapult * Rocket Building Station * Air Vortex Cannon More! Show your kids how much fun they can have with physics.