Final answer:
Blowing air into a balloon causes it to expand until it bursts due to increased pressure. This demonstrates that air exerts pressure.
Step-by-step explanation:
When you blow air into a balloon, the air molecules inside the balloon move faster and spread out, causing the balloon to expand. As you continue to blow air into the balloon, the pressure inside the balloon increases. Eventually, the pressure becomes too great and the balloon bursts.
Yes, this activity also shows that air exerts pressure. The increased pressure inside the balloon causes it to burst. This is because air molecules constantly move and collide with the walls of the balloon, creating pressure.
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