Pressure Bottle Rocket DIY. Water squirters work by pressurizing reservoirs of water with air. As you pump the squirter, it gradually adds air to the reservoir, increasing the pressure. When you pull the trigger, the pressure is allowed to release and a stream of water shoots out! Summer. Boredom Busters. Kids. Science. Activities. Outdoor. Play. Easy.
How to build a cardboard Rocket ship "To make this you will need; - A large refrigerator box. tools(box cutter, tape measure, straight edge, pencil, jigsaw) - Three cans of gray spray paint - A little imagination" Good tutorial.