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Investigation: What Factors Affect Lung Capacity

The amount of air that you move in and out of your lungs while breathing normally is called TIDAL VOLUME. This amount of air provides enough oxygen for a person who is resting. It is possible to inhale and exhale more forcefully – the maximum amount of air moved in and out of the lungs is called the VITAL CAPACITY, which is the amount of air a person can expel from the lungs at maximum inhalation.

In this activity, students will be measuring the vital capacity of members of their class.

Click here for the complete procedure.  

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