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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?
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HYPOTHESIS
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I predict that it won’t do anything without helium...
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EQUIPMENT
AND MATERIALS:
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Bottle cap, balloon, disc
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PROCEDURE:
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Step 1: Glue the bottle cap over the CD hole.
Step 2: Blow up the balloon. When it is fully inflated twist the end so no air comes out.
Step 3: Stretch the balloon over the end of the bottle cap.
Step 4: Open up the cap and place the CD on the surface.
Step 5: Untwist balloon and let go.
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OBSERVATIONS/RESULTS:
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The disc was hovering over the table. The disc was moving fast. The balloon was trying to rise up.
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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 CD and reduces the friction across the surface.
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