Cub Scout Pack 135 Builds a Rocket Launcher

See How to Build a Water Rocket...

If you've ever dreamed about sending a rocket sky-high, you might be relieved to learn you don't have to mess with explosives to make one fly. If you put air under pressure, like in a tire, you can use it to propel an object upwards. Add water to the mix, and your rocket will go far above the trees. This rocket is made from simple PVC plumbing pipe and some plastic soda bottles. It's easy to put together in an afternoon. As long as you always have an adult around, launching your rocket is safe and fun.