Hovercraft
Not my favourite CD!
Basically built a small hovering disk to show the properties of air pressure.
Take an old CD, a balloon, and a liquid soap container. Remove the cap from the container and glue it to the hole on the CD.
Blow up the balloon and attach it to the cap.
Put it on a flat surface and watch it hover around.
Barry's Response - A well documented idea. It shall demonstrate that air is a real matter and takes up space, thereby providing the cushion for the hovercraft to float on and glide across.
Thanks, stranger.
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