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Question 21M.2.SL.TZ2.a

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Date May 2021 Marks available [Maximum mark: 2] Reference code 21M.2.SL.TZ2.a
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.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 ✓


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