One empty plastic water bottle
A couple of fizzing antacid tablet (such as Alka-Seltzer – Get this from
your parents)
Water Popsicle Sticks
Tape
Safety goggles
1. Put on those safety goggles and head outside – no really, when this works, that water bottle really
flies! If you want to try the indoor version, do not turn the bottle upside down in step 5.
2. Tape the Popsicle Sticks to the cap side of the bottle making it so that it acts as a stand for the bottle if it were turned upside down.
3.Break the antacid tablets in half.
4. Remove the lid from the water bottle and put a few teaspoons of water into the bottle.
Do the next 2 steps quickly
5. Drop the tablet half into the bottle and snap the cap onto the canister (make sure that it snaps on
tightly.)
6. Quickly put the bottle on the ground CAP SIDE DOWN and STEP BACK at least 2 meters.
7. About 10 seconds later, you will hear a POP! and the bottle will launch into the air!
Caution: If it does not launch, wait at least 30 second before examining the bottle. Usually the cap is
not on tight enough and the build up of gas leaked out