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### Forces in Fluid Quiz

Mr. Lewis’s 8th Grade Science

Snowshoes enable a person to walk on deep snow because the snowshoes…

- Decrease the person’s weight on the snow.
- Increase the area over which the person’s weight is distributed
- Increase the pressure on the snow
- Increase the buoyancy of the person

A unit of pressure is called a … snowshoes…

- Bernoulli
- Pascal
- Pound
- meter

Air pressure exerted equally on an object from different directions is …

- Balanced pressure
- Gravitational pressure
- Fluid pressure
- Constant pressure

Given that the air pressure outside your body is so great, why aren’t you crushed?

- Human skin is extremely strong.
- Earth’s gravity cancels out air pressure
- Pressure inside your body balances the air pressure outside your body.
- Inertia changes the pressure before it comes into contact with you.

Air pressure decreases as… why aren’t you crushed?

- Velocity increases
- Elevation increases
- Acceleration decreases
- Gravity increases

Water pressure increases as… why aren’t you crushed?

- Depth increases
- Gravity increases
- Force decreases
- Acceleration increases

Which type of substance does Pascal’s principle deal with? why aren’t you crushed?

- Solids
- Fluids
- Powders
- Metals

One application of Pascal’s principle is… why aren’t you crushed?

- A hydraulic car lift
- The flight of an airplane
- A speedboat’s bottom slapping against the waves.
- The buoyancy shown by ducks and other waterfowl

What scientific rule describes why water squirts from a plastic bottle when squeezed?

- Bernoulli’s principle
- Archimedes’ principle
- Pascal’s principle
- Newton’s first law of motion

what does a hydraulic system do? plastic bottle when squeezed?

- Decrease pressure
- Increase velocity
- Multiply force
- Reduce inertia

Answers plastic bottle when squeezed?

- B
- B
- A
- C
- B
- A
- B
- A
- C
- C

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