1. Pressure

2. Think, Pair, Share
Which would hurt more, a woman stepping on your toes with the heel of her high heeled shoes, or an elephant stepping on your toes?

3. Definitions
Fluid
Pressure

4. Pressure Pressure = Force / Area
If force is in Newtons and area in m2, then the answer is in Pascals

6. Fluid Pressure
Fluid pressure is exerted in all directions.

7. How does pressure change with depth or altitude?
Mt. Everest
SCUBA Diving

8. Pressure and Gravity
Due to the force of gravity, the pressure of any fluid varies with depth.
Ears Pop
The “Bends”

13. Pressure on a Diver

17. The weight of the Air Atmospheric Pressure = 14.7 psi 10.13 N/cm2
101 kPa
1018 millibars

18. Differences in Pressure
Fluids move from high to low pressure.
Vacuum cleaners
Straws
Breathing

19. Weather systems