Question

Describe the difference in pressure against your cheeks when they were full of air versus when you released it. How were you able to release the air? In which direction did the air flow?

Answer 1

When they were full of air, then the Pressure was the Highest 'cause of the larger force under the specified area as compared to when we released it.

We decreased the area of our cheek, so pressure increased and air flows from the cheek (area of high pressure) to the atmosphere (Area of the Lower pressure).

Air flows from Cheek to the Outside of your mouth i.e., in open air.

Hope this helps!

Answer 2

There was more pressure against my cheeks when my mouth was filled with air, and the pressure decreased once I blew out the air. I released the air by opening my mouth. The air flowed away from my puffed cheeks—the area of high pressure.