How is a standing wave formed? (progressive waves travel from centre) to ends and [blank_start]reflect[blank_end] (1) AND/OR two (progressive) waves travel in [blank_start]opposite directions[blank_end] along the string (1) waves have the same [blank_start]frequency[blank_end]/[blank_start]wavelength[blank_end]/[blank_start]speed[blank_end] (1) waves have the same (or similar) [blank_start]amplitude[blank_end] (1) [blank_start]superposition[blank_end]/[blank_start]interference[blank_end] occurs (1)

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Waves

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