1. Chapter 14, Section 1 Fluids and Pressure
All Fluids Exert Pressure
Fluids include liquids and gases.
Pressure is the amount
of force exerted
on a given area.

2. The Formula of Force Pressure = Force / Area Force = Pressure x Area
The SI unit is the pascal (pa) F P A

3. More on Pressure
Pressure depends on the depth of the fluid Lower depth = more pressure
Water also exerts pressure.

4. From High to Low
Fluids flow from regions of high pressure to regions of low pressure.
Example: breathing, drinking through a straw, tornadoes, etc.

5. Pascal’s Principle
A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluid.

6. Devices that use liquids to transmit pressure from one point to another are called hydraulic devices.
Ex: brakes in car, earth movers