As part of our ‘forces’ science topic this term we have been planning, designing, building and firing our bottle rockets. In groups of 3 or 4, we had to design a bottle rocket that could be fired into the sky using the force of air pressure. We had to design one that is light, aerodynamic and looks good. First of all we drew our bottle rockets and measured the fins and nose cone and decided what materials to use to make and attach them.
Once we had done that, we painted all the items then put them together. We then had to decide how much water to put inside the bottle, put a cork (with a tiny hole drilled in it) tightly into the top of the bottle and inserted a valve attached to a bike pump. Mr Stone then pumped air into the bottle, building the air pressure and eventually forcing the cork and water out of the bottle and the bottle up into the air.
As you can see we had fun all the way through this project!