Water Power: Rocket-Propelled Vehicles

Harness the power of air and water to make things move! Buildwater-rocket cars, jet-propelled boats, a water gun, and even a lawnsprinkler. Learn about the laws of physics and their applications inreal-world engineering. When you pump air into your rocket, you increase theair pressure inside. Then when you release the clamp, watch out - the air andwater mixture inside will shoot out, causing your rocket to zoom off in theopposite direction! Many machines, from the oldest pipe organs to modern dayrocket ships use the same technologies that power your water rockets. Experiment to test some of the differences between water and air, and learnwhy your rocket needs both to go fast.