Viscosity pt 1

Multiple Choice

Which flows faster: honey or water?

• Honey

• Water

• Both flow at the same rate

• It depends on temperature

Multiple Choice

Why is understanding viscosity important in everyday life?

• It helps us choose the right fluids for different tasks

• It determines the color of a fluid

• It affects the taste of a fluid

• It is only relevant in scientific experiments

Multiple Choice

Which of the following statements about viscosity is correct?

• Viscosity is the property of a fluid that resists the movement of one layer over another.

• Viscosity is the property of a solid that allows it to change shape.

• Viscosity is the ability of a gas to expand indefinitely.

• Viscosity is the tendency of a liquid to evaporate quickly.

Multiple Select

Select all correct statements about kinematic viscosity.

• It is the ratio of dynamic viscosity to density.

• Its SI unit is m²/s.

• It is denoted by the Greek symbol 'nu' (ν).

• It is the product of dynamic viscosity and density.

Multiple Choice

Which of the following best explains the effect of increasing temperature on the viscosity of liquids and gases?

• Viscosity of both liquids and gases decreases

• Viscosity of liquids decreases, viscosity of gases increases

• Viscosity of both liquids and gases increases

• Viscosity of liquids increases, viscosity of gases decreases

Multiple Select

Which of the following are examples of Newtonian fluids?

• Water

• Toothpaste

• Sewage sludge

• Air

Open Ended

Why does viscosity increase when stress is applied?

Multiple Choice

Which property describes a non-Newtonian fluid whose viscosity increases over time?

• Thixotropy

• Rheopexy

• Newtonian behavior

• Ideal fluid

Open Ended

Reflecting on today's lesson, how would you apply the concept of viscosity to identify whether a fluid is shear-thinning or thickening in real-life situations?

Multiple Choice

How does viscosity affect the flow of different fluids as shown in the diagram?

• Fluids with low viscosity flow faster and easier, while fluids with high viscosity flow slower and thicker.

• Fluids with high viscosity flow faster and easier, while fluids with low viscosity flow slower and thicker.

• Viscosity does not affect the flow of fluids.

• All fluids flow at the same rate regardless of viscosity.