How Do You Build A Balloon Rocket Car?
A rocket moves at great speeds because gas under high pressure exits a nozzle at one end and pushes the rocket in the opposite direction. You can make a balloon-powered rocket car from a few items found around the house and an ordinary party balloon that will duplicate this process, although on a much tinier scale. Once constructed, your rocket car will speed along the ground as it demonstrates the principle of how a rocket works. Put the newspaper down on a table. Use the utility knife to cut a hole 4 inches down from the top of the plastic water bottle on one side. Use the utility knife to cut a second hole 10 inches down from the first hole. Use the utility knife to cut two holes on the other side of the bottle that correspond to the two holes just made. Push a drinking straw through each of the two holes on one side so that the ends exit the holes on the other side. Use bonding glue to attach the inside of a water bottle cap to each of the ends of the straws. Let the bonding glue d
