Hovercraft

Things Required-

1. An old CD (Compact Disk)
2. Balloon
3. Super Glue
4. Nuzzled Bottle Cap

 

Procedure-

1. Paste the Bottle Cap With nuzzle facing upside on the hole in the CD.
2. Now Confirm that glue has dried.
3. Now Inflate the Balloon and And put it over the Bottle cap
4.  Now by Adjusting the air pressure the CD will start to hover 
5. The finished Hovercraft should look like the second image
6. Just push the CD now and it will move on table friction-less 

How does it work -

When Air comes down through the hole it lifts the CD and moves uniformly under the CD.This Removes the contact of the CD with the table and thus reduce friction between the surfaces That is why when we push CD it Floats over the table easily 

Fun with hover craft-

You can put some empty cola cans and target it with Hovercraft

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