science component

Materials:
2 tennis ball cans with tops
12 inch strip of duct tape
1 pair of scissors
Steps:
We cut off the bottoms of each tennis ball can.
we then cut down the middle starting from the bottom of each can until about 2 inches from the rim if the lid.
We then placed one can over another with the rim going in first.
We then folded the two flaps of plastic on the outer can over each other and taped them up.
finally, we took the bottoms of one of the cans as a base for our angle and taped it to the bottom of the cannon at a 35 degree angle.
Hypothesis:
As an educted guess, i would say that with the decrease in volume in our design, the preassure will increase making the ball shoot out with more force and go farther. I also think that as long as the tempurature outside is warm, the reaction will happen faster. the 35 degree angle should also help because it prevents the ball from not going high but going strait out.
Data:
The cannon did not fire and there was no reaction that took place. I believe this was because the temperature was cold which slowed down the reaction and did not give enough energy to create a reaction. Next time I would choose a warmer climate to test at so that the reaction would be faster.