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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's going to hover across the table.
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EQUIPMENT
AND MATERIALS:
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I need some air, a balloon, a bottle cap and a cd.
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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:twist the end so no air comes out.blow up a balloon end over the bottle lid.
Step 3: Stretch the balloon end over the bottle lid.
Step 4: open up the cap and place the CD on a table.
Step 5: untwist balloon and let go.
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OBSERVATIONS/RESULTS:
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The Hovercraft hovered over to the other side of the table. It was slightly off the table. It left a damp trail.
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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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