Question 1: Describe three important properties you would consider when choosing a material for making a lightweight, portable camping stove.

Answer: Properties such as high strength-to-weight ratio, heat resistance, and corrosion resistance are important for a portable camping stove.

Question 2: Imagine you are designing a water bottle that needs to be durable, lightweight, and safe for drinking. List two suitable materials and justify your choices.

Answer: Possible materials include polyethylene (due to its durability and safety) and polypropylene (lightweight and chemical resistant).

Question 3: You need to create a handle for a cooking pot that stays cool to touch and is comfortable to hold. Sketch a simple ergonomic handle design and label the key features.

Answer: A correct sketch would show an ergonomic handle with a rounded grip, possibly with a heat-insulating material layer, and contours for comfort.

Question 4: Draw a cross-sectional sketch of a material suitable for a smartphone case that needs to be impact-resistant and lightweight. Label the material and its key features.

Answer: A cross-section showing a polymer material such as silicone or thermoplastic with labels indicating impact resistance, flexibility, and lightweight nature.

Question 5: Explain why metal is often used for making tools but not typically for clothing. Include at least two reasons in your answer.

Answer: Metals are strong and durable, making them ideal for tools. However, they are heavy and can be uncomfortable or unsafe for clothing, which requires lightweight and flexible materials.

Question 6: Design Brief: You have been asked to create a new, eco-friendly backpack suitable for school students. What material would you choose and why? Sketch a basic design for the backpack, highlighting the material used.

Answer: A suitable material might be recycled PET fabric due to its eco-friendliness and durability. The sketch should show a simple backpack outline with labels indicating the recycled fabric.

Question 7: List two advantages and two disadvantages of using glass as a material for making windows in a building.

Answer: Advantages: transparent, weather-resistant. Disadvantages: fragile, heavy.

Question 8: Select a material suitable for making a lightweight, flexible wristwatch strap. Justify your choice based on its properties.

Answer: Silicone or rubber would be suitable due to their flexibility, durability, and comfort for wearing.

Question 9: Describe the process you would follow to select the best material for a new toy that needs to be safe, colorful, and durable.

Answer: Identify the required properties, research materials that meet safety standards, test for durability and color vibrancy, and select the most suitable based on these criteria.

Question 10: Sketch a plan for a new storage container intended for kitchen use. Indicate what material you would choose and why, with labels on your drawing.

Answer: A plan should show the container shape, lid, handles, and labels indicating the material (e.g., BPA-free plastic) and reasons (durability, safety, ease of cleaning).