Question 1: Define the term 'joining' in the context of design and technology.

Answer: Joining refers to the process of connecting two or more materials or components together to form a secure and functional assembly.

Question 2: List three common methods of joining different materials in product design.

Answer: Soldering, welding, and adhesive bonding.

Question 3: Describe a situation where you would choose to use a bolted joint instead of a glued joint.

Answer: A bolted joint would be preferred when the assembly needs to be disassembled later, such as in machinery parts or furniture that might require maintenance or repair.

Question 4: Sketch a simple plan showing how two wooden pieces could be joined using a dowel joint.

Answer: A correct sketch would show two wooden pieces with aligned drilled holes, a dowel inserted into both holes, and the joint secured with wood glue if necessary.

Question 5: Explain the advantages and disadvantages of using welding as a joining method.

Answer: Advantages include a strong, permanent bond and good aesthetic finish. Disadvantages include the need for specialized equipment, safety hazards, and difficulty in disassembly.

Question 6: Design Brief: You need to create a lightweight, portable camping chair that can be easily assembled and disassembled. Which joining method would you recommend and why?

Answer: A suitable joining method would be using push-fit or quick-release joints, such as bolt and nut fasteners, or cam locks, because they allow for easy assembly and disassembly while maintaining strength and stability.

Question 7: Draw a cross-sectional diagram of a typical riveted joint used in metalworking. Label the rivet, the materials being joined, and the rivet head.

Answer: A correct diagram would show two metal sheets with a rivet passing through aligned holes, with the rivet head on one side and the tail on the other, securing the sheets together.

Question 8: What safety precautions should be taken when performing welding? List at least three.

Answer: Wearing protective clothing and gloves, using a welding helmet with a proper filter lens, ensuring good ventilation, and keeping a fire extinguisher nearby.

Question 9: Identify and explain two factors that influence the choice of a joining method in a project.

Answer: Material type (e.g., metal, wood, plastic) and the required strength of the joint. For example, metal might require welding, while wood could use dowels or nails.

Question 10: Sketch a plan for a joint that allows for easy disassembly of a plastic container lid to the base. Indicate the type of joint you are designing.

Answer: A correct sketch would show a snap-fit or screw thread mechanism, with clear indication of how the lid attaches and detaches from the base.