An Experiment about...Your Lungs and Respiratory System!
Think it
The cells that make up your body require oxygen in order to reproduce, turn food into energy, and simply to live. How do you get oxygen? When you breathe, your blood carries oxygen from the air to all parts of the body. Breathing requires the coordinated contraction and relaxation of muscles to force air in to and out of your trachea (windpipe) and lungs.
Materials: - Open space for exercise, a drinking straw
Try it:
Run in place for 30 seconds.
Next, place the straw in your mouth. While plugging your nose and breathing through the straw run in place for 30 seconds.
Compare the two sets of exercises. Did the straw make it easier or harder to breathe?
