Hovercraft

B E G I N N I N G	TITLE	Balloon Hovercraft
	QUESTION	How does a hovercraft hover?
	HYPOTHESIS	I predict that It will fly up.

M I D D L E	EQUIPMENT  AND MATERIALS:	Balloon Bottle cap  Disc  Hot glue gun
	PROCEDURE:	Step 1: Using a hot glue gun, glue the bottle cap over the CD hole. Step 2: Blow up a balloon. When it is fully inflated twist the end so no air comes out. Step 3: Stretch the balloon end over the bottle lid. Step 4: Open up the cap and place the CD on the table. Step 5: Untwist balloon & let go.
	OBSERVATIONS/RESULTS:	I found out that it hover all around the table and it left a track of air.

E N D

CONCLUSION:

The air from the balloon creates a cushion of moving air between the disc and the CD and reduces the friction across the surface.