Date | May 2022 | Marks available | 2 | Reference code | 22M.2.SL.TZ0.2 |
Level | SL | Paper | 2 | Time zone | no time zone |
Command term | List | Question number | 2 | Adapted from | N/A |
Question
Ropes are used for a variety of purposes such as rock climbing, yachting and securing loads to trucks. Figure 4 shows the internal structure of a rope.
Figure 4: The internal structure of rope
Outline why fibres are important for the strength and flexibility of the rope.
List two properties that enable rope to maintain its strength.
Markscheme
individual fibres are flexible (but lack strength);
fibres woven/braided together provide high tensile strength;
Award [1] for identifying one reason why rope fibres are important for the strength and flexibility of the rope and [1] for a development up to [2 max].
high tensile strength;
elasticity;
Award [1] for listing each property that enables rope to maintain its strength up to [2 max].
Examiners report
A very difficult question with illustrations and stem information which showed fibres, strands and yarns that did not help the students. Very few achieved a mark with almost no one achieving two marks. Many repeated the question in their answer which was easy to do as it referred to strength and flexibility.
Another 'list two' with many candidates listing high tensile strength but not many listing elasticity.