Material Properties Quiz

In the context of materials, what does the term 'plastic deformation' refer to?

• Temporary change in shape

• Permanent change in shape

• Change in color

• Change in temperature

What is the primary difference between ductile and brittle materials?

• Ductile materials are heavier

• Ductile materials can sustain more plastic deformation

• Brittle materials are more elastic

• Brittle materials are more conductive

What does the term 'yield strength' refer to in materials science?

• The maximum stress a material can withstand

• The stress at which a material begins to deform plastically

• The stress at which a material fractures

• The stress at which a material returns to its original shape

What is the significance of the yield point in a stress-strain curve?

• It indicates the melting point

• It indicates the start of plastic deformation

• It indicates the fracture point

• It indicates the point of maximum elasticity

What is the primary difference between toughness and hardness?

• Toughness is about energy absorption, hardness is about deformation resistance

• Toughness is about deformation resistance, hardness is about energy absorption

• Both measure the same property

• Toughness is measured by scratching, hardness by stress-strain curve

Which property is measured by the area under a stress-strain curve?

• Hardness

• Toughness

• Elasticity

• Ductility

Which of the following is a method to test hardness?

• Stress-strain curve

• Indentation

• Thermal expansion

• Electrical conductivity

What is the measure of a material's resistance to scratching?

• Toughness

• Hardness

• Elasticity

• Ductility

Which property involves energy absorption without fracturing?

• Hardness

• Toughness

• Elasticity

• Conductivity

What is Yield Strength?

• The stress at which a material breaks

• The stress corresponding to the point at which the material begins to permanently deform

• The maximum stress a material can withstand

• The stress at which a material returns to its original shape