When you inhale, your diaphragm contracts to make room for your lungs, which fill up with air the way balloons do when you blow them up. The cavity inside the bell jar is airtight. The same thing happened in your soda bottle model – when you pulled down on the plastic, the balloon inflated slightly and when you pushed up, the balloon deflated! Science/Math behind the Activity Our lungs inhale and exhale with the help of pressure differences between the outside air and the pressure in the sealed lung cavity (pleural). When you pull on the diaphragm balloon, it lowers the air pressure in the bottle. Explanation. 7. The model demonstrates this action when you pull down on its latex bottom. How could this model be adapted to simulate a condition like asthma? Technical Explanation: During inhalation, the diaphragm contracts downward, and rib muscles pull upward, causing air to fill the lungs. To make it easy for you, I’ve listed the supplies we used, created a how-to video to show you the steps to make your own set of “lungs,” and also included a printable. Inside your body, you have two lungs that work together, and the diaphragm is below them. 8.

Using posters or reference books, compare the lung model to that of the human lung.

Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. a collapsed lung? Age Level: 10 and up Materials • Empty plastic soda or water bottle approximately 500 mL • Scissors • Balloon, • Disposable glove • Rubber band • Clear tape • Push pin, thumbtack, or safety pin Time Safety If you or someone else has a latex allergy, use a nonlatex glove. Describe what happens to the balloon as the plastic moves in and out. Air rushes in to equalize the pressure, causing the balloons to inflate. The balloons (your lungs) inflate, take in more air, or get bigger. The lungs are respiratory organs that are vital to the breathing process and necessary to acquire life-giving oxygen. As the diaphragm is pulled down, the volume of the cavity increases.

emphysema? I got this great idea to construct a lung model from one of my favorite kids’ learning and creative Instagram accounts, Lnnally, who made a lung model here.
Just Breathe Activity – Lung Worksheet – Answers 1. The air that enters the nasal cavity flows down the trachea. This pulls in air from outside the bottle, allowing the balloon at the top – the lung – to inflate. Stimulate discussion by asking students to discuss which parts of the model represent the lungs, chest cavity, and diaphragm? Air goes in and out of both of your lungs at the same time. This causes the pressure to decrease. Video of this experiment during a Facebook Live presentation This model just represents one lung. Use a plastic bottle, a balloon, and a glove to model how your lungs work.


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