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WorksheetsMechanical Properties
Total questions: 15
Worksheet time: 8mins
Which property describes how much mass is packed into a certain volume and helps engineers estimate material weight?
Density (ρ)
Young’s Modulus (E)
Hardness (Hv)
Specific Heat (Cp)
A material starts to bend or change shape permanently at a certain stress. What is this point called?
Ultimate Tensile Strength (UTS)
Yield Strength (σy)
Fracture Toughness (K_IC)
Shear Modulus (G)
Which property is a measure of stiffness—how much something stretches under tension—and is used to prevent beams from bending, buckling, or sagging?
Young’s Modulus (E)
Shear Modulus (G)
Ductility
Toughness (Gc)
Which property tells how much energy a material can absorb before it breaks, helping prevent cracks and failure from impacts?
Hardness (Hv)
Toughness (Gc)
Electrical Resistivity
Thermal Conductivity (k)
Select all properties that primarily relate to a material’s resistance to shape change under deformation (twisting or stretching).
Shear Modulus (G) — resistance to twisting
Young’s Modulus (E) — resistance to stretching
Ductility — ability to stretch before breaking
Fracture Toughness (K_IC) — resistance to crack growth
Which property is defined as the maximum force a material can handle when being pulled before it breaks?
Ultimate Tensile Strength (UTS)
Yield Strength (σy)
Hardness (Hv)
Thermal Expansion (α)
A material that can bend into shapes like wire or foil without breaking has high what?
Hardness (Hv)
Ductility
Electrical Conductivity
Melting Point (Tm)
Which property focuses on preventing sudden failure in brittle materials by resisting crack growth once a crack starts?
Toughness (Gc)
Fracture Toughness (K_IC)
Density (ρ)
Specific Heat (Cp)
Which property measures how well a material resists scratches, dents, and surface wear—useful for tools and cutting edges?
Hardness (Hv)
Ultimate Tensile Strength (UTS)
Thermal Expansion (α)
Electrical Resistivity
A material is described as having high electrical conductivity. Based on the vocabulary, what does this mean?
It easily allows electric current to flow through it
It strongly resists electric current flow
It heats up quickly when current passes
It expands when heated
Which statements correctly match each electrical property to its engineering use? Select all that apply.
Electrical conductivity is important for wires and circuits that must carry electricity.
Electrical resistivity is useful for insulators and heating elements like toaster coils.
Electrical conductivity determines a material’s melting point limit.
Electrical resistivity measures how easily current flows through a material.
Which thermal property is defined as the temperature at which a solid turns into a liquid and is used to set the safe temperature limit for a material’s use?
Thermal Conductivity (k)
Specific Heat (Cp)
Melting Point (Tm)
Thermal Expansion (α)
Select all statements that correctly pair each thermal property with what it means, based on the summary sheet:
Thermal Conductivity (k): how easily heat moves through a material
Specific Heat (Cp): how much energy is needed to heat a material
Thermal Expansion (α): temperature where a solid turns into a liquid
Melting Point (Tm): how strongly a material resists electric flow
A designer is choosing a material for a heat sink. According to the summary, which choice best matches the requirement?
High thermal conductivity is preferred to move heat away quickly
High specific heat is preferred so the part heats up quickly
High thermal expansion is preferred to minimize dimensional change
Low melting point is preferred to prevent overheating
Which pairing is correct according to the summary sheet’s guidance on why each property matters?
Specific Heat (Cp): low value means the material stores heat well
Thermal Conductivity (k): low is good for heat sinks; high is good for insulation
Thermal Expansion (α): important when joining materials that expand differently
Melting Point (Tm): unrelated to a material’s safe temperature limit
