Today we rode our bikes up to the library to see a Mad Science program but it ended up being cancelled.  So we came home for a lttle of  our own mad science.  The supply list is short:  package of Alka Seltzer-or generic brand- cold medicine, bottle or pitcher of water, empty film canaster.  I got ours from our camera shop, free for the asking!  You need the kind with the lid that snaps on on the inside.  And you may want eye protection.

Let kids experiment with different amounts of water and different size pieces of the Cold Tablets-1 whole tablet, 1/2 tablet, 2 tablets…

Drop them into the canister

Add water

Or do it in the reverse order, tablet first then water.  Either way quickly replace the top on to the canister and you can shake it if you want to and then stand back and watch…

It should pop up into the air at varying lengths depending on how many tablets and how much water.

Be sure to keep hands away from mouths as this is medicine.

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