Pressure

What is pressure?

• Force exerted on a surface per unit area

• force exerted on a surface per unit mass

• speed exerted on a surface per unit area

• gravity exerted on a surface per unit area

 If the horse reared up on 2 legs what effect would it have on the pressure?

• it will exert half the pressure it did before

• it will exert the same pressure it did before

• it will exert twice the pressure it did before

• it will exert four times the pressure it did before

Which of these animals would probably cause the greatest pressure on the ground?

• A fat cow with big feet

•  A calf with big feet

• A calf with small feet

• A fat cow with small feet

What is the unit of pressure?

• Pascals

• Newton meter

• Kilogram

• Meter

What will happen to air pressure as you climb up a mountain?

• stays same

• increase

• decrease

• none of above

Where would pressure be the greatest?

• 10 m deep in a lake at sea level

• top of a mountain 15,000 feet up

• 5 m deep in a pond on a mountain

• on a hill in Oklahoma City (1,200 ft. above sea level)

A box on the floor has a weight of 120 N. The surface area the box takes up is 4m².

What is the pressure exerted by the box?

• 30 Pa

• 50 m²

•  50 Pa

• 0.02 Pa

What is the correct equation to calculate pressure?

• pressure = force × area

• Force = pressure × area

• pressure = mass × area

The diagrams show two divers swimming in the sea and two divers swimming in fresh water. Sea water is more dense than fresh water.

On which diver is there the greatest pressure?

• A

• B

• C

• D

Four glass tanks contain water.

In which tank is the pressure of the water on the base greatest?

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