Physics
In our rocket project we made rockets out of soda bottles and we had to have all of the normal requirements like wings and a parachute. Also the rocket had to be powered only by water, so what we did was we would fill the rocket with water and then pressure it with air which would make it fly. Then we had to make the parachute deploy which was hard because we had to have it not in the way and pull out to make the rocket land without blowing up. So when we made the rockets we would test them and see if we had to make any improvements or if we had to change the rockets structure. In the end we went to the fairgrounds and tested them public, most of the rockets didn't work because of the launch pad and the pumps. It turns out that the pumps would not work in the cold and that caused the rockets to not fly. The results of my rocket where not very good because it turns out that it had a leak and it just fell to the ground and never worked. So what I plan to do is to epoxy glue the rocket a bunch so that when we retest it it wont have a leak and it will be successful.