Pressure.

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Presentation transcript:

Pressure

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?

Definitions Fluid Pressure

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

Fluid Pressure Fluid pressure is exerted in all directions.

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

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

Pressure on a Diver

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

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

Weather systems

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