Alka seltzer rocket !!!

Turn plop, plop, fizz, fizz into whoosh whoosh, gee whiz with this alka-seltzer rocket. The rocket gets its thrust from the gas created when you drop a couple of alka-seltzer tablet into some water inside a film canister.

The type of film canister is crucial: use a fuji 35 mm plastic canister that has a lid that fits inside the canister. Canisters with lids that fit around an outside lip wont work. You will also need a couple of pieces of stiff paper, transparent tape and scissors.

To form the body of the rocket, wrap a piece of paper around the canister with the canister’s open end facing out of the bottom end of the tube. Then tape the paper in place. From a quarter-sheet of the stiff paper into nose cone.

Then trim it even on the bottom and tape it onto the top of the rocket body. To launch the rocket, fill the canister about halfway with refrigerated water – cold water is vital to successful liftoff. Drop in two alka seltzer tablets. Quickly pop on the lid, set the rocket on the ground and stand back. The gas will quickly build up pressure in the canister, causing the canister lid to pop off and the rocket rise a short distance into the air.