Water Rocket Derby

What is a Water Rocket Derby?

Well you start by building a rocket out of one or two used two liter soda bottles and tape them together and
decorate them.  Next you pour 20oz of water inside and pressurize them with 45lb of air on a special launcher base and then pull the launch cord!   Up, Up and Away!  These rockets go between 100-200 feet up in the sky and then come crashing back to earth!