Question 1: Explain why aluminium might be a good material for making the frame of a bicycle. Mention at least two properties of aluminium that make it suitable.

Answer: Aluminium is lightweight, which makes the bicycle easier to ride, and it is resistant to rust and corrosion, ensuring durability.

Question 2: Design Brief: You are asked to create a storage box that needs to be lightweight, strong, and weather-resistant. List three materials that could be suitable for this project and justify your choices.

Answer: Possible materials include: Plastic (lightweight, weather-resistant), Metal (strong and durable), and Composite materials (lightweight and weatherproof). Justify each based on their properties matching the criteria.

Question 3: Describe three important properties you would look for in a material used to make a kitchen chopping board. Explain why each property is important.

Answer: Hardness (to resist scratches and cuts), water resistance (to prevent warping and damage from moisture), and non-toxicity (safe for food contact).

Question 4: Sketch a simple design for a plastic water bottle. Indicate areas where you might use different types of plastic based on their properties. Write brief notes on your sketch explaining your choices.

Answer: A basic bottle shape with a narrow neck and a wider body. Notes might include: 'Reinforced areas with stronger plastic,' 'Flexible plastic for the body,' and 'Rigid plastic for the cap.'

Question 5: Identify and explain two advantages and two disadvantages of using wood as a material for making furniture.

Answer: Advantages: It's natural and aesthetic, and easy to work with. Disadvantages: It can be susceptible to damage from water and pests, and may be heavy.

Question 6: Design Brief: Your task is to develop a lightweight, durable backpack for students. List two suitable materials and explain why they are appropriate.

Answer: Nylon (lightweight, strong, and water-resistant) and polyester (durable and resistant to wear).

Question 7: Describe the process you would follow to test if a new plastic material is suitable for outdoor use in a product like a garden bench.

Answer: Test the plastic for weather resistance by exposing samples to sunlight, rain, and temperature changes over time. Check for cracking, warping, or fading. Also, assess its strength and durability under load.

Question 8: Sketch a plan for a small storage container designed to keep electrical components safe. Indicate what materials you would choose for the container and why.

Answer: A rectangular box with a secure lid. Notes should specify: 'Use plastic for insulation and durability,' or 'Use metal for shielding against electromagnetic interference,' depending on the focus.

Question 9: Explain how the properties of silicone make it suitable for use in medical gloves. Include at least two properties in your answer.

Answer: Silicone is flexible and elastic, allowing gloves to fit snugly. It is also heat-resistant and non-toxic, making it safe for medical use.

Question 10: Identify a material suitable for making a child's toy that needs to be soft, safe, and durable. Justify your choice.

Answer: Rubber or silicone, because they are soft, non-toxic, and resistant to wear and tear, ensuring safety and longevity.