Embedded Files
Materials
Introduction
Lungs is one of the most important organ of our body. It helps you breathe. We breathe 24/7. We cannot live without breathing.We don't think about what cause air to go in and out of lungs, or do we?
Large BalloonSmall Balloon
Transparent plastic cup with hole
Rubber stopper (1 hole)
Scissors
Procedure
Place the small balloon over the large end of the one-hole stopper.
Insert the rubber stopper securely into the hole from the inside of the plastic cup
Use scissors to cut the large balloon.
Stretch the large balloon over the end of the cup.
Move the center of the large balloon up and down.
Scientific Principle
Physics: Force, Gas exchange
Biology: Organ system
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