Displacement–time graph of a wave: period and frequency

An example figure from the Wave Generator.

A transverse wave on axes of displacement in cm against time in s, four cycles over 2 seconds, with tick marks instead of gridlines and its period T marked from crest to crest — A wave drawn against time instead of distance: four cycles over 2 seconds, on numbered axes with tick marks rather than gridlines. The period T is marked from one crest to the next and the amplitude is left for students, who work out the frequency from the period.

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Answer key

Amplitude: 4 cm
Period: 0.5 s
Frequency: 2 Hz

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