Question 2
Section C: science experiment. The supplied key prints 40 marks and a 50-minute limit. Ten points per parent task and its subpart rubric are editorial allocations; no per-task scores are printed.
## II. “Abbreviations” of shape-memory plastics
The source describes a plastic sheet that remembers an earlier form: draw a picture, heat with a hot-air machine or oven, and the sheet shrinks into a small ornament. Design experiments to measure the size reduction. Write the procedures and explain them.
Provided materials:
- ruler;
- hot-air machine;
- A4 shape-memory plastic sheets;
- drawing pens;
- ordinary A4 paper;
- knife;
- clipper.
“Abbreviations” is the source's term for shrinkage, not shortening written words.
## II. “Abbreviations” of shape-memory plastics
The source describes a plastic sheet that remembers an earlier form: draw a picture, heat with a hot-air machine or oven, and the sheet shrinks into a small ornament. Design experiments to measure the size reduction. Write the procedures and explain them.
Provided materials:
- ruler;
- hot-air machine;
- A4 shape-memory plastic sheets;
- drawing pens;
- ordinary A4 paper;
- knife;
- clipper.
“Abbreviations” is the source's term for shrinkage, not shortening written words.