Student scientists on the Blue Team at Stepping Stones Day Program designed and launched water bottle rockets as part of their summer unit on force and motion. This fun experiment demonstrated how a build up in pressure can launch a rocket.
Each student created a rocket using a recycled bottle, heavy gauge cardboard, duct tape, water and a cork. The rockets were decorated and personalized by each student prior to flight.
A miniature launch pad was made of snap blocks, and a bicycle pump was used to set the rockets into flight.
Through the demonstration, students also witnessed how air pressure can build inside a bottle. When air pushes on the water inside the bottle, it creates enough pressure to push the cork out.
The rockets “flew” when the water rushed out toward the ground and the bottle pushed upward into the air.
The successful rocket launches supported Isaac Newton’s theory of motion, which states, “For every action there is an equal and opposite reaction.”