The Sand Crawler Competition

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:

 

Then we tried water power:

 

Finally we used sand:

 


 

 

 

 

 

 

 

 

 

 

                    ... and painted the result pink ...

                           

 

 

But did it work ? (click image to see)

 

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