Air Pressure Lab

Here is a video of our class "Air Pressure Lab." Greater air pressure ALWAYS moves to areas with lower air pressure. When we turned the vacuum on, many people might say "the air was sucked out!" This is a false statement! What Gio explains is that the air pressure inside of the bag becomes less than the air pressure outside of the bag. Because GP (greater pressure) moves to areas of LP (lower pressure), the GP wanted to be inside with the LP and therefore PUSHED against the bag!