SCI 101 DrG Lubricants week 8

Front

What is viscosity?

Back

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

Front

Which fluid has the highest level of viscosity?

Back

Molasses has the highest level of viscosity compared to water, dish soap, and oil.

Front

What are lubricants?

Back

Lubricants are substances used to reduce friction between moving surfaces.

Front

What does '10 W 30' mean in motor oil?

Back

In '10 W 30', the '10' stands for the weight of the oil in cold temperatures.

Front

What is a shear thinning material?

Back

A shear thinning material is one that thins as it is stirred or agitated.

Front

What is a shear thickening material?

Back

A shear thickening material is one that thickens as it is stirred or agitated.

Front

Give an example of a shear thinning material.

Back

An example of a shear thinning material is ketchup, which becomes less viscous when shaken.

Front

Give an example of a shear thickening material.

Back

An example of a shear thickening material is cornstarch mixed with water, which becomes thicker when stirred quickly.

Front

What is the role of lubricants in machinery?

Back

Lubricants reduce friction, wear, and heat generation between moving parts in machinery.

Front

How does temperature affect viscosity?

Back

Generally, as temperature increases, viscosity decreases, making fluids flow more easily.