Use simple materials in this demonstration to make a miniature hovercraft explore a tabletop. In this activity, the air pressure from the balloon is pushed out beneath the CD and allows it to glide across a surface, friction free!

Use simple materials in this demonstration to make a miniature hovercraft explore a tabletop. In this activity, the air pressure from the balloon is pushed out beneath the CD and allows it to glide across a surface, friction free!