2022 IGCSE Paper 3 Section A- Exam

Fig. 1 shows a cycle helmet. The outer and inner shells are made from different plastics.

Give two properties required of the plastics used to make the cycle helmet. [2]

Fig. 2 shows a small wheel. The wheel could be made from wood, metal or plastic. Name a suitable manufacturing process used to produce the wheel when made from:

Wood [1]

Metal [1]

Plastic [1]

Fig. 3 shows two pieces of wood being glued together. Draw on Fig. 3 to show how the glued joint could be strengthened by dovetail nailing. [2]

Fig 4. shows a saucepan

(a) Name a thermosetting plastic that could be used for the handle. Give a reason for your choice. [2]

(b) Name a ferrous alloy that could be used for the saucepan body. Give a reason for your choice. [2]

Fig 5. shows three pre-drilled holes to take a screw.

Select from the list below the correct name for each hole numbered 1, 2 and 3. [3]

countersunk hole

stopped hole

angled hole

pilot hole

clearance hole

Fig. 6 shows a board made from hardwood. The board needs to be seasoned.

Draw on Fig. 6 to show what could happen to the shape of the board if it was incorrectly seasoned. [1]

Fig. 5 shows a wheelbarrow. The mild steel body of the wheelbarrow is galvanised.

(a) State what is meant by the term ‘galvanised’. [1]

(b) State why it is necessary for the body of the wheelbarrow to be galvanised. [1]

Fig. 6 shows a child’s push-along go-kart.

Give two examples of anthropometric data used in the design of the go-kart [2]

Fig. 9 shows a length of wood set up on a woodturning lathe. Name the method of woodturning shown in Fig. 9. [1]

Fig. 10 shows a length of wood ready to be set up on the woodturning lathe. Give one reason why the corners of the wood have been removed. [1]