Question 1: Describe three important properties you should consider when choosing a material for a lightweight portable water bottle.

Answer: Properties to consider include: durability (resistance to impact and breakage), non-toxicity (safe for holding liquids), and lightweight (to make the bottle easy to carry).

Question 2: A company wants to design a durable and weather-resistant outdoor bench. Which material would you recommend and why?

Answer: I would recommend using treated hardwood or metal such as stainless steel because they are strong, weather-resistant, and durable for outdoor use.

Question 3: Explain how the properties of plastics make them suitable for manufacturing household containers.

Answer: Plastics are lightweight, can be easily moulded into various shapes, are resistant to corrosion and chemicals, and are generally inexpensive, making them ideal for household containers.

Question 4: Design Brief: You need to create a lightweight, eco-friendly shopping bag that can carry groceries without tearing. Which material would you choose and why?

Answer: A suitable material could be jute or recycled cotton because they are strong, lightweight, biodegradable, and environmentally friendly.

Question 5: Sketch a simple design for a handle made from a suitable material for a luggage case. Your sketch should show the handle shape and indicate the material used.

Answer: A correct sketch would show a curved or ergonomic handle shape, with labels indicating the material (e.g., rubber-coated plastic or reinforced nylon), designed for comfort and strength.

Question 6: What are the advantages and disadvantages of using metal as a material for a kitchen utensil such as a spatula?

Answer: Advantages include high strength, heat resistance, and durability. Disadvantages can be heavy, conduct heat, and may scratch non-stick surfaces.

Question 7: Identify a material suitable for making a flexible, transparent watch strap and justify your choice.

Answer: Silicone or thermoplastic elastomers are suitable because they are flexible, transparent, and comfortable to wear.

Question 8: Design Brief: Your task is to develop a lightweight, sturdy stand for a mobile phone that can be easily transported. Which material would you select and why?

Answer: I would choose a durable plastic such as polypropylene because it is lightweight, strong, and easy to mould into different shapes.

Question 9: Describe the process you would use to test the suitability of a new material for a children's toy.

Answer: Testing would include checking for safety (non-toxicity), durability (resistance to impact), ease of cleaning, and ensuring it is lightweight enough for children to handle comfortably.

Question 10: Sketch a plan for a small, eco-friendly storage box. Indicate the material you would use and explain your choices in the annotation.

Answer: A correct plan would include a simple box shape, with labels indicating the use of recycled cardboard or bamboo. Annotate to explain that these materials are sustainable, lightweight, and sturdy.