1. Chapter 3 Section 1
Pressure

2. Pressure is the force exerted on a surface.
Your feet exert force on the ground in the form of pressure.

3. Pressure and Area Pressure decreases as the amount of area increases.
Snow shoes help increase the area
Water skis also increase the area.

4. Fluid Pressure
Particles in a fluid exert a force on the container they are in.
These particles hitting the container create pressure.

5. Air Pressure
Air has mass
Gravity acts on all masses
Therefore air has weight
This is called air pressure

6. Pressure Changes
As your elevation increases the amount of air above you decreases. So air pressure decreases.
As your go deeper underwater, water pressure increases.