Material properties (Starter)

What are the mechanical properties of materials?

• Color, weight, size

• Temperature, pressure, volume

• Density, viscosity, conductivity

• Strength, hardness, elasticity, plasticity, toughness, ductility, and brittleness

What are the modes of failure in materials?

• fracture, fatigue, creep, and wear

• hardness, toughness, strength, and stiffness

• brittle, ductile, malleable, and elastic

• corrosion, deformation, delamination, and oxidation

What are the different types of forces?

• gravitational force, electromagnetic force, strong nuclear force, and weak nuclear force

• magnetic force, electric force, gravitational force, and frictional force

• kinetic force, potential force, elastic force, and magnetic force

• centripetal force, frictional force, tension force, and normal force

How do you calculate the force in a given scenario?

• force = mass / acceleration

• force = mass + acceleration

• force = mass x acceleration

• force = mass - acceleration

What is stress and how is it calculated?

• Stress is calculated by assessing the intensity and duration of the stressor and the individual's ability to cope with it.

• Stress is calculated by analyzing the amount of sleep a person gets.

• Stress is calculated by measuring the heart rate and blood pressure of an individual.

• Stress is calculated by counting the number of stressful events a person experiences.

What is strain and how is it calculated?

• Strain is calculated by adding the change in length of the object to its original length.

• Strain is calculated by subtracting the change in length of the object from its original length.

• Strain is calculated by dividing the change in length of the object by its original length.

• Strain is calculated by multiplying the change in length of the object by its original length.

What is Young's modulus and how is it determined?

• Young's modulus is determined by measuring the ratio of velocity to acceleration in a material under tensile or compressive forces.

• Young's modulus is determined by measuring the ratio of stress to strain in a material under tensile or compressive forces.

• Young's modulus is determined by measuring the ratio of length to volume in a material under tensile or compressive forces.

• Young's modulus is determined by measuring the ratio of force to area in a material under tensile or compressive forces.

How do tensile forces affect materials?

• Tensile forces cause materials to shrink or contract.

• Tensile forces have no effect on materials.

• Tensile forces cause materials to become more rigid.

• Tensile forces cause materials to stretch or elongate.