Make a launchpad that holds the bottle with the neck downwards, lets you attach the pump and stand behind the bottle. One good method is to plant a spade or garden fork in the ground at a low angle ...

Eighth and ninth grade students worked in teams to design, build, and launch water bottle rockets, learning about propulsion and altitude calculation in the process. “Hopefully they're having a ...

Start pumping gently and steadily, keeping the bottle lined up as best you can ... that if you change the design, you also need to consider extra safety precautions. Rockets work by ejecting ...