You can build a rocket
launcher from an old plastic soda bottle.
bottle (only one is required for each launcher, but we strongly recommend
that you make two launchers and have a couple of extra soda bottles
on hand in case one fails)
||1 meter (about
3 feet) of clear flexible vinyl tubing with 1/2 inch inner diameter
and 5/8 inch outer diameter (the type of tubing doesnt matter,
as long as you can tape one end to the neck of the soda bottle and
the other end to the PVC pipe)
||60 cm (about
2 feet) of PVC pipe with 1/2 inch inner diameter
cap from bottle.
about an inch of flexible tubing into the bottle opening. Tape it in place
with duct tape. Try to make the connection between the tubing and the
the PVC pipe against the other end of the flexible tubing. (Dont
try to insert the tubing into the PVC pipe.) Tape the tubing and the PVC
pipe together. Again, try to make the connection airtight.
Your finished launcher should look something
like this »»
For tips on
how to use this trick with a class or group, go to the Teacher/Leader