Topic 4: Playing with Air Pressure


Air pressure is the force exerted onto a surface by the weight of the air.

Pressure of the weight of the air pushing on us every moment of every day. The only reason we don’t get crushed is that our bodies push back at the air with the same pressure.

The highest pressure is at sea level where the density of the air molecules is the greatest.

Air pressure decreases as we move upward

What was the point of this activity?

The purpose of this activity was to see how air pressure impacts certain things

Explain how you would introduce this to your class?

I would introduce this to my class by asking my students what they already knew about air pressure and how we can find it in our everyday lives. I could also show them the demonstration of air pressure on pHet. I will make sure I define things very well so they can better visualize it.

Where do you see a student having difficulty with this?

Difficulty in this activity could stem from students not understanding why it is harder to pull their hand out when the hole is covered. Also, it may be difficult understanding molecules being pressurized since it is something they cannot visually see.


What changes or extensions could you do to this activity?

I could extend this activity by using smaller gloves for students with smaller hands or clear gloves so they can see what their hand is doing inside the jar.

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