Understanding Atmospheric Pressure and Altitude

The video explains atmospheric pressure, caused by air molecules colliding with surfaces, and how it acts equally in all directions. It discusses the pressure inside and outside a can, emphasizing the need for balance to prevent collapse or explosion. The video also covers how pressure varies with altitude, increasing as we move deeper into the atmosphere due to the greater weight of air above, and decreasing as we ascend, due to reduced air density.

Describe how pressure varies with height above the Earth's surface.

What is the relationship between air density and atmospheric pressure?