A Simple Experiment for Class IV in science subject. It is easy less or almost not Expensive to know its behaviour

1. HoverCraft Science
ExperimentStandard/Class IV

2. Materials Required to make a
hovercraft for your tabletop!
1. An old CD/DVD disc
2. A 9” balloon
3. A pop-top cap – it can easily be found on liquid
soap bottles
4. Hot glue

3. Experimental Procedure
1. Glue the cap to the center of the disc. Make
sure you don’t leave any gap for the air to pass.
2. Blow up the balloon till its maximum capacity
and pinch it tight – DO NOT tie it.
3. Making sure the pop top is closed, t the neck of
the balloon over the pop up portion of the cap.
4. Place the hovercraft on your tabletop and
unscrew the pop top for it to really hover!

4. How does it happen?
 A cushion of moving air between the disc and the
surface are created by the balloon. The cushion
lifts the disc and allows it to hover!

5. Experimental Picture:

6. Animation of Hovercraft