Forces in Fluids Review

Which type of substance does Pascal's principle deal with?

• gasses

• powders

• fluids

• solids

Which of the following is true of the buoyant force?

• it acts in the downward direction

• it acts with the force of gravity

• it acts in the upward direction

• it makes an object feel heavier

A ship stays afloat as long as the buoyant force is ....

• less than the ship's speed

• greater than the ship's weight

• less than the ship's weight

• greater than the ship's speed

If the density of an object is equal to the density of the fluid in which it is immersed,

• the object rises

• the object sinks

• the object will sink, then rise, then keep repeating this

• the object neither rises nor sinks but instead floats at a constant level

Label the two arrows with the correct force

a

b

Displacement

Gravity

Buoyancy

Density

The rule that the buoyant force on an object is equal to the weight of the fluid the object displaces.

• pascal's principle

• bernoulli's principle

• archimedes' principle

• Newton's Law

Which of the following refers to the ability of a fluid to support an object in or on the fluid?

• density

• gravity

• buoyancy

• hydraulics

"The resistance of a fluid to flowing" is MOST likely the definition for which of the following terms:

• Pressure

• Density

• Buoyancy

• Viscosity

If an object floats, the volume of displaced water is equal to the volume of ....

• the portion of the object that is above water

• the portion of the object that is submerged

• the entire object

• exactly half of the object

A unit of pressure is called a...

• pascal

• bernoulli

• pound

• meter