Material Properties Quiz

What is the term for the force required per unit extension?

• Stiffness

• Strain

• Stress

• Young modulus

Which term describes the force applied per unit area?

• Stress

• Yield point

• Strain

• Elastic limit

What is the definition of Young modulus?

• Stress that can be applied before a material breaks

• Stress per unit strain

• Force per unit extension

• Change in length per unit original length

What is the term for a material that returns to its original shape when the force is applied?

• Inelastic

• Elastic

• Breaking stress

• Plastic

What is the maximum amount of force that can be applied such that the material is elastic?

• Limit of proportionality

• Breaking stress

• Yield point

• Elastic limit

What is the term for the ratio of change in length to the original length?

• Stress

• Strain

• Elastic limit

• Young modulus

What is the term for the point beyond which a material will not return to its original shape?

• Elastic limit

• Limit of proportionality

• Yield point

• Breaking point

State Hooke's Law

• Force is directly proportional to extension (F=ke)

• Force is directly proportional to extension (F=k/e)

• Force is inversely proportional to extension (F=ke)

• Force is inversely proportional to extension (F=k/e)

Beyond the limit of proportionality (SELECT TWO)

• The material is no longer elastic

• The material no longer returns to original length when force removed

• Hooke's Law no longer applies

• Force does not equal stiffness times extension

Breaking stress

• The maximum force that can be applied before a material snaps

• The maximum force per unit area that can be applied before a material snaps

• The maximum force that can be applied before a material becomes inelastic

• The maximum force per unit area that can be applied before a material becomes inelastic