In chemistry, the eighth graders created hot air balloons to test the ideas of buoyancy and Archimedes’ principle, along with Charles’ law and thermal expansion. Using paper, glue and tape, the students worked in teams to engineer balloons that would create the largest lift when filled with heated air.
In the church parking lot, the students worked together to fill their balloons and create lift. Some balloons went higher than others, but all took off! Some groups had to make alterations on the fly, and some tried adding different amounts of air or waiting for wind gusts, but they finally got lift off!
While flying their hot air balloons, and with the help of the wind, the students noticed how fluids move in and push matter. Additionally, the engineering process was in full effect with the eighth graders as they attempted to fly their balloons. When hitting snags in their designs or having environmental challenges, the students were able to problem solve and determine changes they could make to their designs or process to get their balloons off the ground!