How waves propagate themselves

[Bernard NebelKeymaster]

Beyond sound waves, another kind of wave is what you see when you jerk the end of a rope quickly up and down. The up-down wave continues to travel down the length of rope. The following video (first half) describes how/why this sort of wave propagates itself.  The same explanation can be applied to waves on water (and to electromagnetic

waves which come later).

https://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-transverse-and-longitudinal-waves-ap/v/introduction-to-waves

Have students note how energy is transferred from one place to another via waves of either sort. (Please post questions/comments.)

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