Question 1: Describe three common properties of metals that make them suitable for structural components in products.

Answer: Metals are strong, durable, and have high tensile strength, making them suitable for supporting loads; they are also malleable and ductile, allowing them to be shaped; they are good conductors of heat and electricity.

Question 2: Explain why plastics are often used in consumer products instead of metals.

Answer: Plastics are lightweight, flexible, and can be easily molded into various shapes. They are also generally cheaper and resistant to corrosion compared to metals.

Question 3: List two properties of wood that are advantageous when designing furniture.

Answer: Wood is strong and durable, and it has a natural aesthetic appeal.

Question 4: Identify a material that is suitable for making electrical insulators and explain why.

Answer: Rubber is suitable because it is a good electrical insulator, preventing the flow of electricity and ensuring safety.

Question 5: Design Brief: You need to create a lightweight, waterproof outdoor lantern. Which material would you choose for the outer casing? Sketch your design idea and justify your choice.

Answer: A suitable material might be plastic or rubber due to their waterproof properties and light weight. The sketch should show a compact, sealed casing with a handle or stand, with notes explaining the waterproof and lightweight features.

Question 6: Sketch a cross-section of a material that is both flexible and transparent. Label its key properties.

Answer: The sketch should depict a thin sheet-like material, such as acrylic or flexible plastic, with labels indicating flexibility and transparency.

Question 7: Describe the properties that make ceramics ideal for use in kitchenware.

Answer: Ceramics are heat resistant, hard, and non-reactive, making them safe for cooking and serving food.

Question 8: Design Brief: You are designing a protective case for a smartphone. Which material would you choose to balance protection and aesthetics? Sketch your idea and explain your choice.

Answer: A suitable material could be silicone or plastic, offering shock absorption and a modern appearance. The sketch should show a snug-fitting case with cushioning features, with notes on its protective and aesthetic qualities.

Question 9: List two properties of foam materials that make them useful for padding or cushioning in packaging.

Answer: Foam is soft and compressible, providing good shock absorption; it is also lightweight.

Question 10: Describe how the properties of glass differ from those of plastics when used in product design.

Answer: Glass is hard, brittle, and non-porous, making it suitable for containers and windows, but it can shatter easily. Plastics are generally more flexible, lightweight, and impact-resistant, allowing for a wider range of applications.