Lesson: Chapter 4 — Waves and their applications

4.1.3. Describing a wave 6 of 6 Reset answers

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Question 6

On a graph of one particle's displacement against time, what is the time between two neighbouring crests?

A The period B The amplitude C The frequency D The wavelength

The right answer is the one marked above.

The period. Crest to crest on a time axis is one full oscillation, and the time for one oscillation is the period.

On a distance axis the same gap would be the wavelength — which is why the axis has to be read first.

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