Fluid Mechanics Quiz

When an object moves through a fluid, which of the following will affect fluid friction? Select all that apply.

• The fluid's color

• The fluid's viscosity

• The speed of the object

• The object's density

• The shape of the object

True or False. Water has greater viscosity than air.

Briefly explain the difference between viscosity and fluid friction.

Which of the following are factors that affect air density? Select all that apply.

• Humidity

• Pressure

• Viscosity

• Friction

• Temperature

Briefly explain why two substances with the same volume can have different densities. Give an example.

True or False. Air density increases as altitude increases.

Which of the following statements about air density are true? Select all that apply.

• Air density and air pressure are inversely proportional.

• As temperature increases, so too does density.

• Temperature is inversely related to air density.

• Humid air is less dense than dry air.

Tags

NGSS.HS-PS3-2

The Coanda Effect is the tendency of a stream of fluid to _______ .

• avoid a moving object

• move below an airplane's wing

• attach to a convex surface

• go around a wing or rotor

Millibars (mb) is a unit of measurement for _______ .

• air temperature

• density

• atmospheric pressure

• fluid friction

An airfoil's movement through air is similar to _______.

• a moving freight train

• a boat's movement on water

• a beam of light

• electron flow through a wire

Tags

NGSS.HS-PS2-1