5.) which of the following discribes the wavelength?

A. the time taken for the crests to move a distance of one wavelength.

B. the set of points on a series of waves which are in phase and are equidistant from the source.

C. the distance from one crest to the next crest, or from one trough to the next trough, or between two succesive particles which are in phase.

D. none of these.

The wavelength of a wave describes how long the wave is. The distance from the "crest" (top) of one wave to the crest of the next wave is the wavelength. Alternately, we can measure from the "trough" (bottom) of one wave to the trough of the next wave and get the same value for the wavelength

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