Question 22N.2.SL.TZ0.c
| Date | November 2022 | Marks available | [Maximum mark: 2] | Reference code | 22N.2.SL.TZ0.c |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Outline | Question number | c | Adapted from | N/A |
A string of length 0.80 m is fixed at both ends. The diagram shows a standing wave formed on the string. P and Q are two particles on the string.
The standing wave on the string creates a travelling sound wave in the surrounding air.
Outline two differences between a standing wave and a travelling wave.
[2]
travelling waves transfer energy OR standing waves don’t ✓
amplitude of oscillation varies along a standing wave OR is constant along a travelling wave ✓
standing waves have nodes and antinodes OR travelling waves don’t ✓
points in an internodal region have same phase in standing waves OR different phase in travelling waves ✓
This question was answered well. Students showed to be familiar with the differences between standing and travelling waves. In SL they had to identify two differences, so that proved to be more challenging.
