FLUIDS

Which of the following statements in NOT correct?

• Solids can be subjected to shear stresses.

• Fluids display the property of flow.

• Forces act on a fluid in the same way they act on a solid.

• The term fluid therefore includes liquids and gas.

The term fluids generally applies to:

• solid and liquid

• liquid and gas

• solid and plasma

• water only

Which statements below is INCORRECT about liquids and gases?

• Liquids possess greater kinetic energy than gases.

• Gases have weak molecular force of attraction while liquids have a moderate force of attraction.

• Liquids have a definite size where gases can expand to fill any closed container.

• Gases are easily compressed where liquids are not.

Tags

NGSS.MS-PS3-1

It is a sub-discipline of fluid mechanics that describes the flow of fluids.

• Fluid Mechanics

• Fluid Dynamics

• Hydrostatics

• Fluid statics

What are the two examples of normal stress?

• shear stress and tangential stress

• compressive and tensile stress

• shear stress and compressive stress

• pressure and compressive stress

Which of the following best describes shear stress?

• It is an example of a normal stress.

• It acts inward, toward the surface, and perpendicular to the surface.

• It acts along the surface, parallel to the surface.

• It is force per unit mass, acting parallel to an infinitesimal surface element.

What type/s of stress can act on a fluid in motion?

• normal and tangential stress

• normal stress only

• shear stress only

• tensile stress and shear stress

A fluid at rest can resist a shear stress.

• TRUE

• FALSE

The fluid on which the net force is zero is considered as static.

• TRUE

• FALSE

A fluid is a substance which deforms continuously under the application of a __________.

• shear stress

• compressive stress

• tensile stress

• normal stress