*****8th Grade: Chapter 4 Test "Fluids & Forces"

Front

What principle explains how an airplane wing generates lift?

Back

Bernoulli's principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure.

Front

What is Pascal's principle?

Back

Pascal's principle states that when pressure is applied to a confined fluid, the pressure change is transmitted equally in all directions throughout the fluid.

Front

What does Bernoulli's principle deal with?

Back

Bernoulli's principle deals with the behavior of fluids in motion.

Front

What is a hydraulic lift?

Back

A hydraulic lift is a device that uses a liquid to transmit force, allowing heavy objects to be lifted with less effort.

Front

True or False: Pascal's principle is used in hydraulic systems.

Back

True

Front

What happens to fluid flow in a larger straw compared to a smaller straw?

Back

Juice will flow more slowly in straw A (the larger straw) due to lower pressure.

Front

What is the relationship between fluid speed and pressure according to Bernoulli's principle?

Back

As the speed of a fluid increases, the pressure within the fluid decreases.

Front

What is the significance of Archimedes' principle?

Back

Archimedes' principle states that an object submerged in a fluid experiences a buoyant force equal to the weight of the fluid displaced.

Front

What is density in the context of fluids?

Back

Density is the mass per unit volume of a substance, which affects buoyancy and fluid behavior.

Front

True or False: Bernoulli's principle applies to fluids at rest.

Back

False, Bernoulli's principle applies to fluids in motion.