Question 1: Describe the key properties of a metal that make it suitable for manufacturing a bicycle frame.

Answer: Metals used for bicycle frames should be strong, lightweight, durable, and resistant to corrosion. They should also be able to absorb some impact without deforming.

Question 2: Identify a material that is suitable for making a waterproof outdoor jacket and explain why.

Answer: A suitable material could be nylon or polyester because they are water-resistant, lightweight, and durable, preventing water from penetrating the fabric.

Question 3: Compare the properties of plastic and wood when used for making furniture.

Answer: Plastic is lightweight, resistant to moisture, and easy to mould into various shapes, but may be less strong. Wood is strong, natural, and aesthetically pleasing but can be affected by moisture and requires maintenance.

Question 4: Design Brief: You need to create a lightweight and durable storage box for outdoor use. Which material would you choose and why?

Answer: A suitable material would be high-density polyethylene (HDPE) plastic because it is lightweight, durable, weather-resistant, and easy to clean.

Question 5: Sketch a design concept for a handle that is comfortable to hold and suitable for a small hand. Label the key features of your design.

Answer: A correct sketch would show an ergonomic handle with a smooth, contoured shape that fits comfortably in the hand, possibly with textured grip areas. Labels should include 'contoured shape', 'textured grip', and 'appropriate size for small hands'.

Question 6: Draw a cross-section of a foam cushion. Indicate the properties of the foam that make it suitable for comfort.

Answer: A detailed cross-section would show a porous, spongy internal structure representing foam. The properties to label include 'softness', 'compression ability', and 'lightweight'.

Question 7: Explain why glass is a good material for making 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, making it ideal for windows.

Question 8: Suggest a material suitable for making a lightweight, eco-friendly shopping bag. Justify your choice.

Answer: Recyclable fabric such as organic cotton or jute would be suitable because they are lightweight, biodegradable, and environmentally friendly.

Question 9: Design Brief: You are developing a protective case for a smartphone. Which material would you choose and why?

Answer: A suitable material could be silicone or rubber because they are shock-absorbent, flexible, and provide good protection against impacts.