science - Breathing Is Essential to Life John Panaro...

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Breathing Is Essential to Life John Panaro Objectives: Students in the experiment will: 1. Recognize that breathing is a necessary, automatic life process; 2. Observe and record data on respiration rate; 3. Demonstrate how air enters and leaves the lungs; 4. Observe how respiratory rate changes with different activities; 5. Use counting as a means of gathering data ACTIVITY #1: COLLECT ONE OF THE GASES IN YOUR BREATH MATERIALS: paper towel hand mirror PROCEDURE: Use the paper towel to clean and dry the mirror. Hold the mirror near, but not touching, your mouth. Exhale onto the mirror two or three times. Examine the surface of the mirror. QUESTIONS: What happens to the mirror? Why does the mirror become fogged? ANSWERS: The mirror becomes fogged. Your breath contains saliva which condensates on the mirror. ACTIVITY #2: LISTEN TO PARTNERS BREATHING; COUNT BREATHS PER MINUTE MATERIALS: stethoscopes watch or clock with second hand index cards or sticky note paper with student's names PROCEDURE: Use a stethoscope to listen to one another's breathing. Hold breath as long as
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science - Breathing Is Essential to Life John Panaro...

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