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TITLE
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Balloon Hovercraft
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QUESTION
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How does a hovercraft hover? air
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HYPOTHESIS
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I predict that ...it will work, the balloon will hover across the table.
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EQUIPMENT
AND MATERIALS:
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1 CD 1 balloon 1 Bottle Lid
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PROCEDURE:
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Step 1:Using a hot glue gun, Glue the bottle cap over the CD hole.
Step 2: Bowl up the Balloon.When is fully inflated Twist end so no air comes out.
Step 3: Stretch The balloon over the end of the bottle cap.
Step 4:Open up the cup and placed the CD on the surface
Step 5:Un-Twist the balloon and let it go
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OBSERVATIONS/RESULTS:
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It hovered about 1 centimetre above the ground and lots of people called it a lawnmower. It darted around the table.
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CONCLUSION:
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The air from the balloon creates a cushion of moving air between the disc and the surface. The air reduces the friction across the surface
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