Forces in Fluids Quiz

What is the direction of the buoyant force in relation to the force of gravity?

• Same

• Opposite

• Upward

• Downward

What happens to an object in a fluid if its weight is more than the buoyant force?

• It will stay still

• It will sink

• It will disappear

• It will float

What principle states that the buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces?

• Bernoulli's Principle

• Archimedes' Principle

• Pascal's Principle

• Newton's Principle

What does density tell about an object?

• Its weight

• Its mass for its volume

• Its shape

• Its color

What does Pascal's principle state about the change in pressure in a confined fluid?

• It stays the same

• It increases

• It decreases

• It disappears

What do hydraulic systems use to transmit pressure?

• Air

• Fluids

• Electricity

• Water

According to Bernoulli's principle, what happens to the pressure within a moving fluid as its speed increases?

• It disappears

• It decreases

• It stays the same

• It increases

What helps explain how planes fly, according to Bernoulli's principle?

• Lift

• Gravity

• Friction

• Buoyancy

What is the upward force due to different air pressure above and below an object called?

• Friction

• Buoyancy

• Gravity

• Lift

What moves smoke up a chimney, according to Bernoulli's principle?

• Gravity

• Heat

• Friction

• Wind