The purpose of this exhibit would be to compare the relationship between the changes in pressure and volume (gas law) for several fluids, and to compare densities of different fluids. In this exhibit a gas law relationship would be demonstrated by changes in pressure caused by submerging fluid-filled balloons into tanks filled with various other fluids, which will produce changes in the volumes of the balloons. Density comparisons will be made as the participant feels the differences in difficulty of submerging the fluid-filled balloons into other fluids.
A participant of the exhibit varies the depths of the balloons by pulling a string attached to the balloon through a pulley. The fluids inside the balloons can be liquids or gases, such as water or helium. Both the fluids inside and outside of the balloons must cause a compression of the balloon which will be visually dramatic to the participant. In addition to seeing the balloon compress, the participant will also feel the degrees of difficulty in pulling down the different balloons controlling the different fluids.