Question 1: Describe three different properties of metals that make them suitable for use in manufacturing household utensils.

Answer: Metals are good conductors of heat and electricity, have high strength and durability, and can be shaped or formed easily through processes like bending or welding.

Question 2: Identify two common methods used to join metals in manufacturing. Explain the advantages of each method.

Answer: Welding, which creates a strong, permanent bond suitable for structural applications; and riveting, which allows for disassembly and is useful in situations where welding is not practical.

Question 3: A company needs to produce a lightweight, corrosion-resistant bicycle frame. Which metal would you recommend and why?

Answer: Aluminium, because it is lightweight, has good corrosion resistance, and is strong enough for bicycle frames.

Question 4: Sketch a design for a small metal box that could be used to store jewelry. Include features that protect the contents and allow for easy access.

Answer: A rectangular box with a hinged lid, a small latch or lock for security, and foam or padding inside to protect jewelry. The sketch should show the overall shape, lid, hinge placement, and interior padding.

Question 5: Design a metal bracket that can support a shelf in a kitchen. Include the shape, key features, and how it would be fixed to the wall.

Answer: A bracket with a flat horizontal arm to hold the shelf, a vertical support for strength, and holes or slots for screws at both the wall attachment point and the shelf connection. The sketch should clearly show these features.

Question 6: Explain why stainless steel is often used in cutlery and kitchen utensils. Include at least two reasons.

Answer: Stainless steel resists corrosion and staining, making it hygienic and durable, and it maintains a shiny appearance that is aesthetically pleasing.

Question 7: Identify a metal that is commonly recycled and explain why recycling metals is important for the environment.

Answer: Aluminium is commonly recycled because it reduces energy consumption and conserves natural resources. Recycling metals helps decrease landfill waste and lowers environmental impact.

Question 8: Create a simple plan for manufacturing a metal keyring, considering materials, tools, and process steps.

Answer: Use a metal strip or wire, cut to size, shape into a circle with an opening for attaching keys, and then finish by smoothing edges. Tools include a metal cutter, pliers, and a file for smoothing. The process involves cutting, bending, and finishing.

Question 9: Discuss two environmental considerations when choosing metals for a product design.

Answer: The environmental impact of mining and processing metals, and the recyclability of the metal after the product's life cycle.

Question 10: Design a plan for testing the strength of a metal rod intended for use in a structural application. What tests would you conduct?

Answer: Conduct tensile testing to measure how much load the rod can withstand before breaking, and bend testing to assess ductility. Record the maximum load and observe deformation behaviors.