Air Pressure
1. Air pressure is all around us.
2. Air pressure is a kind of force.
3. Air pressure has enough power to move very large objects.
4. Air pressure in the atmosphere affects the weather.
5. Air pressure can keep a basketball from going flat.
6. The following illustrates air pressure: space inside car tires, space inside a basketball, and air used to run commercial tools.
7. The straw didn’t go into the potato when it wasn’t sealed with your thumb because the straw was too weak without the trapped air.
8. The sealed straw was stronger because the trapped air compressed, which supported the straw.
9. This activity proved that air is a form of matter because the straw with the trapped air penetrated the potato.
10. If there was no air pressure human beings could not breathe.
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