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Worksheets2.3.5 (d) Material Properties
Total questions: 10
Worksheet time: 5mins
Which property describes a material's ability to absorb energy without fracturing, and which example best illustrates this property?
Toughness; Polycarbonate used in safety goggles
Hardness; Hardened steel cutting tools
Ductility; Copper for electrical wiring
Elasticity; Elastomeric rubbers in seals
If you were designing a bridge cable that needs to resist pulling forces, which mechanical property would be most important to consider, and what is a suitable example?
Tensile strength; High-tensile steel cables
Compressive strength; Concrete columns
Malleability; Gold sheet metal
Durability; Teak for outdoor furniture
A manufacturer wants to create cookware that efficiently transfers heat. Which property should they prioritize, and which material is commonly used for this purpose?
Thermal conductivity; Aluminium
Electrical conductivity; Copper
Acoustic insulation; Foam panels
Optical transmission; Acrylic (PMMA)
Compare the properties of natural timbers and manufactured boards. Which statement best explains why blockboard is preferred over MDF for shelving?
Blockboard is more durable and less prone to warping than MDF
Blockboard is a better conductor of electricity than MDF
Blockboard is softer and less stable than MDF
Blockboard absorbs more sound than MDF
A designer needs a material for light boxes and lenses that allows light to pass through and disperse. Which property and material should they select, and why?
Optical transmission; Acrylic (PMMA), because it transmits and disperses light
Acoustic insulation; Foam panels, because they absorb sound
Electrical conductivity; Copper, because it carries current
Thermal conductivity; Aluminium, because it transfers heat
Which property of corrugated card makes it suitable for transit packaging and cereal boxes?
High electrical conductivity
Strong and rigid structure
Low density
High thermal resistance
How can the hardness of metals be increased?
By adding water
By heat treatment
By painting
By reducing density
Steel is a workable material for construction and tools mainly because it is composed of:
99% copper and 1% tin
99% iron and 1% carbon
50% iron and 50% carbon
80% aluminum and 20% zinc
Explain why alloys are preferred over pure metals for certain applications, using evidence from their properties.
Alloys are always lighter than pure metals
Alloys have tailored properties like hardness, toughness, and corrosion resistance
Alloys are more expensive than pure metals
Alloys are less durable than pure metals
A manufacturer needs to produce complex casings for electronic devices. Which material and process combination would be most suitable, and why?
Hardwood and subtractive machining, because hardwoods are flexible
ABS thermoplastic and injection moulding, because ABS is suitable for complex forms
Steel and forging, because steel is strong
Brass and casting, because brass is decorative
