Sent in by: Melissa of Shoreline, WA and Josh of Merriam, KS 2,
4, 6, 8, get this craft to levitate! - plastic plate - film
canister - ballpoint pen - poster putty - Check with an adult
before you begin. - To make a Hovercraft, poke a hole in the
center of a plastic plate with a ballpoint pen. - Poke another
hole in the center of the bottom of a film canister. - Put the
film canister over the hole in the plate and use poster putty to
stick it on. - Blow up a balloon and twist the opening so that
air doesn't come out. - Stretch the opening of the balloon over
the film canister. Make sure that the opening of the balloon
lines up with the hole in the film canister. - Put the
Hovercraft on a smooth, flat surface, let go of the balloon and
give it a flick. The Hovercraft will glide across the surface on
a cushion of air. The air in the balloon has to go somewhere.
So, it flows out of the balloon and goes under the plate. The
layer of air under the plate takes up space so it keeps the
plate and table from rubbing o