Fluids Practice Test

Which car fluid needs to be checked with the engine running?

• Engine oil

• ATF

• Coolant

• Washer fluid

Which car fluid is not part of a closed system?

• Washer fluid

• ATF

• Power steering

• Brake

What is the density of water?

• 1

• 1mg/mL

• 1 g/mL

• 1 g/L

Fish can adjust their overall __density__ by adjusting the amount of oxygen in their swim bladder.

• mass

• volume

• density

• weight

The __viscosity__ of a fluid refers to its 'thickness,' or its resistance to flow.

• density

• viscosity

• adhesion

• cohesion

Objects that are __streamlined__ have shapes that reduce turbulence.

• streamlined

• rough

• dense

• heavy

Define Pneumatic System: A confined pressure system that uses air or other gases as the fluid.

• Hydraulic System

• Pneumatic System

• Closed System

• Open System

Define Compressibility: A measure of how squishable a fluid or solid is when pressure is applied to it.

• Compressibility

• Density

• Viscosity

• Elasticity

What is the force exerted on a piston with a 0.25 m² surface area if it lifts a 78.4 N object?

• 10 N

• 15 N

• 20 N

• 25 N

If you exert a 15 N force on a piston with a 0.25 m² surface area, what must be the area of the piston supporting a 78.4 N object?

• 0.5 m²

• 1.0 m²

• 1.3 m²

• 1.5 m²