The hypothesis is that if someone has a higher volume of water displacement, then his lung capacity is greater than someone with less volume displacement.

You will create a fitness survey, clean the plastic tubing, fill a plastic bottle with water, have the volunteer hold the bottle in the water, have the volunteer take in a big breath and blow out as much air as possible through the tube, measure the volume of water displaced, and give the volunteer a 2-minute break between trials.

You will need 7-10 volunteers with varying fitness levels, a fitness survey, a 2-liter plastic bottle or 1-gallon plastic jug, a plastic dish pan, masking tape, a permanent marker, clear, bendable plastic tubing, a large liquid measuring cup labeled with ounces, white vinegar, water, a small cup, and paper towels.

The results of the experiment showed that those who exercised more regularly and more intensely had greater lung capacity. This indicates that regular and intense exercise results in larger lung capacity, which is one measurement of someone being fit.

This science project is interesting and unique because it allows people to measure their own lung capacity and see how it relates to their fitness level.

Variations of this experiment could include testing the lung capacity of different age groups or testing the lung capacity of people who exercise differently.

Hey there! Here are some awesome videos about this science project that we think you'll really like. They're not only super fun, but they'll also help you learn more about the science behind the project. So sit back, relax, and get ready to have some fun!!