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What are some types of lung capacity experiments?

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Quick Answer

Two types of experiments that measure lung capacity involve using a jug or a balloon. Experiment using a jug by gathering some supplies, such as a jug, 60 centimeters of vinyl tubing, a drinking straw, a plastic tub, masking tape, a measuring cup and a funnel.

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Full Answer

Begin by placing a strip of masking tape from the bottom to the top of the jug, according to the Science Museum of Minnesota. Fill the jug with water in increments of 250 milliliters. Mark the jug to reflect each increment, such as 250 milliliters and 500 milliliters, until it is full. Fill the plastic tub with 58 centimeters of water. Cover the opening to the jug, placing it upside down in the tub without letting any water escape, and hold it upright. Insert the vinyl tubing into the jug to a depth of about 810 centimeters. Insert the straw into the dry end of the tubing, instructs the Science Museum of Minnesota.

Breathing normally, exhale through the straw, and record the amount of water displaced to find the sum of tidal air. Refill the jug with water, and return it to the tub upside down, reinserting the tubing and straw. This time exhale normally, and then force out any remaining air to find the amount of reserve air, recording the measurement, suggests the Science Museum of Minnesota. For the last measurement, take a deep breath, and force all the air out of the lungs. Record this amount to determine the vital capacity, which is the tidal air, reserve air and complemental air, and review the findings.

Another experiment uses a balloon to measure lung capacity, according to Biology Corner. This experiment involves measuring the diameter of the balloon to achieve the same results.

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