DP Physics (last assessment 2024)
Question 21M.2.SL.TZ2.5a
| Date | May 2021 | Marks available | [Maximum mark: 2] | Reference code | 21M.2.SL.TZ2.5a |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | Describe | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 2]
21M.2.SL.TZ2.5a
(a)
Describe two ways in which standing waves differ from travelling waves.
[2]
Markscheme
energy is not propagated by standing waves ✓
amplitude constant for travelling waves OR amplitude varies with position for standing waves OR standing waves have nodes/antinodes ✓
phase varies with position for travelling waves OR phase constant inter-node for standing waves ✓
travelling waves can have any wavelength OR standing waves have discrete wavelengths ✓
OWTTE
