Material Science Quiz

What does 'Breaking Stress' refer to?

• The force required to stretch a material.

• The maximum stress a material can withstand without fracturing.

• The point where a material loses its elasticity.

• The stress at which a material starts to flow.

Which term describes a material that fractures without plastic deformation first?

• Elastic

• Ductile

• Brittle

• Malleable

What does 'Ductile' mean in material science?

• A material that breaks easily.

• A material that can be compressed easily.

• A material that can withstand large plastic deformation without breaking.

• A material that cannot be stretched.

What is 'Elastic Deformation'?

• Permanent change in shape due to stress.

• Breaking of a material under stress.

• When a material returns to its original shape after an applied stress.

• Deformation that occurs at the yield point.

The 'Elastic Limit' is defined as:

• The stress required to break a material.

• The maximum stress that can be applied without causing plastic deformation.

• The limit of a material's elasticity.

• The point of maximum strain.

Hooke’s Law is best described as:

• The law defining the viscosity of a material.

• The law relating to the brittleness of a material.

• The extension of an object being directly proportional to the force applied.

• The relationship between stress and strain.

What is the 'Limit of Proportionality'?

• The point beyond which a material becomes ductile.

• The point at which Hooke's law no longer applies.

• The maximum point of elasticity in a material.

• The initial point of stress in a material.

Define 'Plastic Deformation':

• Temporary change in shape under stress.

• Permanent deformation after an applied stress.

• Change in shape due to elastic properties.

• Deformation without any stress.

'Tensile Strain' refers to:

• The resistance to tensile stress.

• The force applied during tensile testing.

• The extension of an object divided by its original length.

• The point at which a material breaks under tension.

Stress in general is force per unit cross-sectional area. What is 'Tensile Stress'?

• The flexibility of a material under tension.

• The internal resistance of an object against a force that acts to deform it.

• The breaking point of a material under tension.

• The strain a material undergoes under tension.