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Goldfield Infants' & Nursery School

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Mad Science - Pushes, Pulls and Rockets Workshop

In this workshop we dicovered the power of air and gravity.

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If I hold up a balloon in the air....

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.... what will happen to it when I let go?

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Okay everyone jump up!

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Jump up, don't come back down again! (naturally this is impossible to do as gravity brings you back down)

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What about if we use a hairdryer on a cold setting, can we make the balloon stay in the air?

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Yes! If you wave your hand through the flow of air will the balloon fall or stay in place?

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The air being blown by the hairdryer hugs the balloon and keeps it afloat even when your hand quickly interrupts the flow.

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Place your hand above the balloon and you can feel the air flowing from all around the side.

 

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You can even control the balloon's movement by wriggling your fingers and moving your hand....

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... you can make the balloon move up and down!

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Can we make the balloon move sideways and stay afloat?

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Yes! But it is quite tricky to do.

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I wonder how many balloons we can keep afloat?

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The first balloon is small and has a slightly oval shape.

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Just like before you can feel the air hugging the balloon.

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Let's try the turbo setting on the hairdryer. Wow! see how high the balloon is floating.

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Add the next balloon .... the air flow is hugging both balloons and keeping them afloat.

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Finally a third balloon is added ....

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.... and all three remain afloat!

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Let's launch some rockets powered by air.

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Can you feel the air rushing out of the nozzle when the pump is pulled out and pushed in again?

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Foam rockets are light and easily travel across the classroom.

 

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This model rocket is heavier and needs more air to launch it. The fins at the bottom keep the rocket stable. When it reaches the highest point gravity pulls it back down to ground.

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We are going to make some paper rockets to launch outside using a stronger rocket launcher.

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Air is trapped in the blue box when the pump is pushed down and pulled up.

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Pressing down on the yellow leaver releases the compacted air making the rocket blast up into the sky.

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Our rockets are made of paper, we take turns to decorate the body by adding patterns.

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The paper is rolled around the rocket launcher tube and fastened along the edge with selotape.

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A nozzle is fitted and also secured with selotape.

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Time to launch our rockets.

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It's hard work pumping the air into the blue box.

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The more air we pump in the higher the rockets will fly.

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The rocket launch is so successful it's hard to capture it even on video. To view the launch please click on the play button above. This rocket was launched in the playground and it landed in the circle of logs!

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Animated Thank You Mad Science what a fantastic time we have had learning about forces!

Back to Science Week

 

 

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Christchurch Road, Tring, Hertfordshire HP23 4EE

Tel: 01442 823551 Email: admin@goldfield.herts.sch.uk

Headteacher: Mrs Debora Stevens