Room 14 had our own stall at the Science Fair . Our experiment was called Rocket Launch .
Have you ever noticed what happens if you let the air out of a balloon? The air goes one way and the balloon moves the other. Rockets work in much the same way . Gases coming out of the engine push the rocket forward.
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We put a string through a drinking straw and tied the two ends of the string to stools to pull it tight.
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We blew up a long balloon using a balloon pump.
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| We kept the air in the balloon using a clothes peg. |
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| We used sellotape to attach the balloon to the side of a straw. |
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We took off the peg to let the air fly out of the balloon, pushing it forward along the string.
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| One- Two- Three- Blast Off ! |
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