Question 1: Define the term 'material selection' in product design. Explain why choosing the correct material is important when designing a product.

Answer: Material selection involves choosing the most suitable material based on properties, cost, durability, and functionality for a specific product. It is important because it affects the product's performance, lifespan, safety, and cost-effectiveness.

Question 2: List three key properties you would consider when selecting a material for making a lightweight, portable camping chair.

Answer: Lightweight, strength/durability, resistance to weather or corrosion.

Question 3: Describe a scenario where plastic would be the most suitable material for a product. Explain your reasoning.

Answer: Plastic is suitable for making a children's toy because it is lightweight, inexpensive, easy to mould into complex shapes, and safe for children. Its durability and variety of finishes also make it ideal.

Question 4: Imagine you are designing a protective case for a smartphone. List at least three material options and give one advantage for each.

Answer: Polycarbonate - impact resistant, rubber - good shock absorption, silicone - flexible and non-slip.

Question 5: Sketch a simple design for a container that needs to be waterproof and durable. Label the key features of your design and specify the materials used for each part.

Answer: The sketch should show a container with a screw lid or rubber seal, thick walls, and possibly a reinforced base. Labels should include: main body (plastic or metal), sealing gasket (rubber), and lid (metal or plastic).

Question 6: A school wants to produce a set of reusable water bottles that are environmentally friendly. Suggest two materials they could use and justify your choices.

Answer: Stainless steel – durable, reusable, and recyclable. BPA-free plastic – lightweight, inexpensive, and recyclable.

Question 7: Design Brief: You need to create a lightweight, comfortable handle for a tool that will be used outdoors. Which material would you choose and why?

Answer: A suitable material would be rubber or soft plastic because it provides a comfortable grip, is weather-resistant, and absorbs shocks, making it ideal for outdoor use.

Question 8: Explain the difference between natural and synthetic materials, providing one example of each and their typical uses.

Answer: Natural materials are derived from plants or animals, such as wood, which is used for furniture. Synthetic materials are man-made, like nylon, used for clothing and textiles.

Question 9: Identify and explain two environmental considerations that should be taken into account when selecting materials for a product.

Answer: Sustainability – choosing recyclable or biodegradable materials to reduce environmental impact. Carbon footprint – selecting materials that require less energy to produce to lessen pollution.