Fluid Dynamics and Properties

Front

What is viscosity?

Back

Viscosity is a measure of a fluid's resistance to flow. It describes how thick or sticky a fluid is.

Front

What is surface tension?

Back

Surface tension is the elastic-like force existing on the surface of a fluid, caused by the attraction of molecules. It allows small objects to float on the surface.

Front

What is fluid mechanics?

Back

Fluid mechanics is the study of fluids (liquids and gases) and the forces that act on them.

Front

What happens to a marshmallow in a vacuum?

Back

A marshmallow expands in a vacuum because the air pressure around it decreases, allowing the gas inside to expand.

Front

What is buoyancy?

Back

Buoyancy is the upward force that a fluid exerts on an object placed in it, which can cause the object to float.

Front

What is density?

Back

Density is the mass of a substance divided by its volume. It determines whether an object will float or sink in a fluid.

Front

What is the relationship between density and buoyancy?

Back

An object will float if its density is less than the density of the fluid it is in; it will sink if its density is greater.

Front

How does temperature affect viscosity?

Back

As temperature increases, the viscosity of a fluid typically decreases, making it flow more easily.

Front

What is the principle of Pascal's law?

Back

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

Front

What is the difference between laminar and turbulent flow?

Back

Laminar flow is smooth and orderly, while turbulent flow is chaotic and irregular.