![]() The same exercise can be done for transverse waves, but this might be overkill.Įpisode 310-1: Graphs for a longitudinal wave (Word, 66 KB) Discussion: Extending the first activityĬheck the outcome of the graph plotting activity, particularly the final displacement/ position graph which gives the wavelength discuss the link with pressure if this seems appropriate. ![]() The completed diagrams can be used in discussion later. The pattern is best seen by doing one particle at a time. Students should use a particle spacing of 1 cm. Student activity: Drawing longitudinal wavesīy plotting the displacements of individual particles through which a wave is passing, students can develop their ideas of the underlying process of a wave. Discussion: Practice with phase (15 minutes).Discussion: Extending the first activity (15 minutes).Student Activity: Drawing longitudinal waves (10 minutes).on an oscilloscope, from which frequency can be deduced). ![]() Students often confuse displacement/distance graphs (from which wavelength can be deduced) with displacement/time graphs (e.g. ![]()
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