We learned in our Classical Conversations about pressure and how in can build, we did it in the experiment with mentos and diet coke and Nucleation and how the mentos have pores in them that make the carbonation shoot up.
Then Mrs. Sgambatti made these great PVC pipes and tire plugs to make a home made rocket. She was kind enough to make one for every family tot take home. So Kaleigh got to see the fun we had in school even though she couldn't come to school that day, we got to bring the fun home to her.
One T-Shaped PVC pipe, with tire plug at one end and hole at the bottom and cap on the the other end.
Fill an empty soda bottle about 1/4 filled with water. Attach bottle with water to the end, and attach bicycle pump.
Pump the tire pump until you see the water start to bubble.
This is what happens.
That rocket shot 30 feet up in the air. It was so cool. We had to do it 4 or 5 times.