Hovercraft Term 3

This week we made a Balloon hovercraft. WE have been learning how to write scientific reports.

B E G I N N I N G	TITLE	Balloon Hovercraft
	QUESTION	How does a hovercraft hover?
	HYPOTHESIS	I predict that it will do nothing because it needs helium.

M I D D L E	EQUIPMENT  AND MATERIALS:	Balloon  Cd And a bottle cap.
	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 cap. Step 4: Open up the cap and place the CD on a table lid. Step 5: Untwist balloon and let go.
	OBSERVATIONS/RESULTS:	I saw the balloon go smaller and smaller and the CD hover on the table.

E N D

CONCLUSION:

The air from the balloon creates a cushion of moving air between the disc and the surface. The air lifts the CD and reduces the friction which allows the CD to hover across the surface.