An electricity technician installs a cable tightly between two utility poles during a very hot summer day.
The weather changes and becomes extremely cold in winter.
Which row in the table correctly describes what could happen to the cable and the reason why?
| What could happen | Why | |
|---|---|---|
| A | It sags further | It expands |
| B | It sags further | It contracts |
| C | It snaps | It expands |
| D | It snaps | It contracts |
Row A
Row B
Row C
Row D
96 exam-style questions on CIE IGCSE Physics 2.2.1 Thermal expansion of solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.