2a Fluid Mechanics Quiz alevel edexcel

Poiseuille's equation relates fluid flow rate to:

• a) Fluid density and viscosity

• b) Fluid pressure and volume

• c) Fluid temperature and density

• d) Fluid velocity and acceleration

Terminal velocity is reached when:

• a) The fluid reaches its maximum density

• b) The fluid's viscosity becomes infinite

• c) The gravitational force equals the viscous drag force on an object

• d) The fluid's velocity becomes constant

Stoke's law describes the:

• a) Behavior of fluids under high pressure

• b) Relationship between fluid viscosity and temperature

• c) Terminal velocity of an object falling through a fluid

• d) Fluid flow rate in laminar flow conditions

What is the definition of fluid density?

• a) The resistance of a fluid to flow

• b) The force exerted by a fluid on a submerged object

• c) The mass of a fluid per unit volume

• d) The pressure exerted by a fluid at a given depth

Upthrust, also known as buoyant force, is caused by:

• a) The weight of the fluid displaced by an object

• b) The pressure difference between the top and bottom of an object

• c) The viscosity of the fluid

• d) The speed of the fluid flow

Viscosity is a measure of a fluid's:

• a) Density

• b) Resistance to flow

• c) Upthrust

• d) Pressure

Turbulent flow is characterized by:

• a) Smooth and orderly flow patterns

• b) Chaotic and irregular fluid motion

• c) High fluid viscosity

• d) Low fluid density

A streamlined shape is designed to:

• a) Reduce fluid viscosity

• b) Increase turbulence in flow

• c) Minimize fluid resistance

• d) Maximize fluid density

Laminar flow is characterized by:

• a) Smooth and orderly flow of fluid layers

• b) Chaotic and unpredictable fluid motion

• c) Rapid changes in fluid pressure

• d) High viscosity of the fluid

A Newtonian fluid is one that:

• a) Behaves in a predictable manner under stress

• b) Exhibits chaotic and irregular flow patterns

• c) Changes viscosity with temperature

• d) Shows laminar flow at high speeds