Question 1: Describe three properties of metals that make them suitable for constructing structural parts of a product.

Answer: Metals are strong, durable, and have good electrical and thermal conductivity. They are also malleable and can be shaped easily.

Question 2: Identify two materials that are suitable for making a lightweight and flexible handle for a tool. Explain your choices.

Answer: Plastic and rubber are suitable because they are lightweight, flexible, and provide good grip and comfort.

Question 3: A manufacturer wants to produce a waterproof outdoor sign. Which material would be most appropriate and why?

Answer: A weather-resistant material such as acrylic or PVC would be suitable because they are waterproof and durable outdoors.

Question 4: Sketch a design for a protective cover for a smartphone that needs to be lightweight, impact-resistant, and easy to grip. Label the key features of your design.

Answer: A correct sketch would show a case with shock-absorbing edges, a textured surface for grip, and a slim profile. Labels should include 'impact-resistant material', 'textured grip', and 'slim design'.

Question 5: Design a simple container to hold small items like paper clips or pins. Consider the properties of the material in your design.

Answer: A suitable design would be a small box made from a rigid, lightweight plastic or metal with a lid that snaps shut to keep items secure.

Question 6: Draw a plan for a lightweight, eco-friendly shopping bag. Indicate the materials used and their properties that make them suitable.

Answer: A sketch should show a bag made from a durable, biodegradable fabric such as jute or canvas, with labels indicating properties like strength, eco-friendliness, and reusability.

Question 7: Explain why glass is a good material choice for windows in buildings. Mention at least two properties.

Answer: Glass is transparent, allowing light to pass through, and it can be made strong and resistant to weather conditions, making it suitable for windows.

Question 8: Design a prototype for a lightweight, durable sports helmet. Sketch the shape and label the key material properties that are important for safety.

Answer: A sketch should show a rounded helmet shape with ventilation holes. Labels should include 'impact absorption foam', 'rigid outer shell', and 'lightweight material'.

Question 9: A company needs to produce a cost-effective, disposable utensil for single use. Which material would you recommend and why?

Answer: Plastic, such as polystyrene or polypropylene, because it is cheap, easy to mould, and suitable for single-use products.

Question 10: Explain the importance of flexibility and durability in creating a wearable wristband. Which materials might be suitable?

Answer: Flexibility allows the wristband to fit comfortably around the wrist, and durability ensures it lasts through daily use. Materials like silicone or rubber are suitable.