Unit 3: A3 Product in theory
Topic 3.1: Material classification Questions
Practice 20 exam-style questions for IB Design Technology Topic 3.1. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
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Why does the guide call identifying the most suitable material complex and challenging?
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A designer is selecting a material for the outer casing of a cordless drill. Explain how classifying materials by physical, chemical and mechanical properties helps make the choice.
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A material is drawn out into a thin wire without breaking. This property is:
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Glass is very hard but not tough. This means it:
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A material fails a food-safety requirement but scores best on everything else. It should be:
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Explain the physical properties a designer would specify for the base and the handle of a frying pan.
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A phone screen is very hard but not tough. Explain what this means for the user and suggest a design response.
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In glass-reinforced plastic, what does the polyester resin do?
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The shelf of a flat-pack cabinet is made from plywood, a composite. Explain what its constituents are and why the combination outperforms solid timber of the same thickness.
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Which group contains only NATURAL materials?
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Which consideration in material selection cannot be read from a data sheet?
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Why does a bridge need expansion joints?
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Which pair correctly separates a physical change from a chemical one?
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Electrical conductivity and electrical resistivity are:
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A diving board is described as strong but not stiff. This means it:
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What is the main advantage of a shell structure?
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Materials are classified into which three families of property?
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Which family does 'resistance to scratching' belong to?
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Which property is PHYSICAL rather than chemical?
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What is the main advantage of classifying materials by property?
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