Forces in Fluids

The buoyant force acting on an object is equal to

• the object's mass

• the object's volume

• the mass of the fluid displaced by the object

• the weight of the fluid displaced by the object

A partially submerged object floats when

• the object's weight is equal to the buoyant force

• the object's mass is equal to the buoyant force

• the object's weight is greater than the buoyant force

• the buoyant force is downward

The force that particles in a fluid exert over an area is called

• pressure

• density

• gravity

• buoyancy

The amount of water pressure that you experience in a pool depends on

• your buoyancy

• the size of the pool

• the volume of water

• how deep you are in the water

An upward force applied by a fluid on an object in the fluid

• Bernoulli

• Buoyant force

• gravity

• Archimedes

According to Bernoulli's Principle, when the wind speed is high, wind pressure is ________

• high

• low

• not enough information

• None of the above

Label the two arrows with the correct force

a

b

Buoyancy

Gravity

Density

Displacement

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

Hydraulic systems use ________ to transfer force from one point to another.

• Air

• Liquid

• Solid

• Gas

To generate lift, a blade is angled so the _________ pressure air moves under the blade.

• high

• low

• not enough information

• None of the above