First we tried a rubber-band powered device:
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Then we tried water power:
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Finally we used sand:
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This was part of the Explore Science competition
The goal:
to make a non-electrical device that moves over 1 meter in exactly 15
seconds.
First we tried a rubber-band powered device:
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Then we tried water power:
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Finally we used sand:
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... and painted the result pink ...
But did it work ? (click image to see)
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