Info on how to make the rocket
Ballast can be any material that provides weight for the rocket and ensures the rocket can coast once it is launched.
Make sure you are in an open, outdoor area. The rocket will shoot up quite fast and high so remove any obstructions and warn anyone around you before you launch it.
Hold the rocket by the neck of the bottle and pump air into it. The rocket will go off when the cork can no longer withstand the pressure building up in the bottle.
Let go of the bottle. The water will shoot out everywhere when the bottle rocket takes off, so be prepared to get a bit wet.
Do not approach the rocket once you start pumping, even if it appears that nothing is happening with the launch, as this can lead to injury
Use scissors or a box cutter. You want a nice, clean cut so the bottles can be taped together cleanly and straight.
Cutting off the cap end of the bottle will make the rocket more aerodynamic
Uploaded by: Wikivisu and durable. A rounded end is also softer so it will do less damage to any objects if the rocket hits something when it lands.To put in the kitty litter, tip the cut bottle a and pou r in about ½ inch of kitty litter. Then, add enough water to wet the kitty litter completely. Add another ¼ inch of kitty litter and soak it again. Avoid dumping in too much kitty litter as this can create a dry layer of kitty litter than could get loose and scatter when the rocket is launched. Too much kitty litter, or weight, in the rocket, can also cause the rocket to hit hard when it comes down.Then dry the inside walls of the bottle
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