DP Physics (first assessment 2025)
Question 22N.2.SL.TZ0.3c
| Date | November 2022 | Marks available | [Maximum mark: 2] | Reference code | 22N.2.SL.TZ0.3c |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Outline | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 2]
22N.2.SL.TZ0.3c
(c)
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]
Markscheme
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 ✓
Examiners report
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.
