Further Investigations
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If you were going to more accurately
investigate you inhale and exhale with your
lungs, what improvements might you make to
your model to get more realistic results?
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For a fixed amount of air, establish
that PV=constant. You can use a syringe
connected to a pressure sensor and take
pressure readings at various volumes.
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If you use the volume of a sphere to
estimate the volume of a balloon, you are
using the sphere volume equation as a
mathematical model for balloon volume. How
accurate is this model? Try performing
several experiments with various diameter
balloons. Calculate the volume of the
balloon and then measure the volume of the
balloon. Make a chart of balloon diameters,
measured volumes and calculated volumes.
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