Northwestern Physics Demos                                 Go back to Mechanics
DCS# 1N22.20NWU# M-14Location    2A3
title: Air/Water Rocket
aka: water rocket   or   Rocket

Toy plastic rocket in tray.   Pump with just air a specific number of times and launch.  (feeble)  Now pour a few milliliters of water into it and pump the same number of times.  The launch will be much more vigorous.

   Why is the water so much more effective than the air?
   Would this work on the Moon?
   Would this work in outer space?
pix of plastic rocket in tray