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### 24 Cards in this Set

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 antinode pooints of constructive interference; where cord oscillates with maximum amplitude node points of destructive interference; where cord remains still standing wave a pattern thta is produced by interaction of incident and reflected waves. principle of superposition to determine the resulting amplitude when waves interfere, add the individual amplitudes together. destructive interference result of when two waves oppose each other as they pass by. constructive interference when the resulting wave has an amplitude greater than that of either of the orginal waves. interference the interaction of different waves of the same nature. wave fronts the whole width of a wave crest (what we call a "wave" when at the beach) reflection a wave that has bounced back from a boundary between two different materials transverse wave a wave in which the direction of the vibration is PERPENDICULAR to direction of traveling motion of wave. longitudinal wave a wave in which the direction of the vibration is PARALLEL to direction of traveling motion of wave. amplitude (A) maximum displacement from the equilibrium position. wavelength (lambda sign) the distance between two successive crests wave velocity the velocity at which wave crests (or any other part of the waveform) moves. continuous/periodic wave the source of the wave is a vibration (or oscillation). pulse a single wave bump resonant frequency the natural vibrating frequency of a system resonance occurs when periodic impulses are given to an object ata frequency equal to one of its natural frequencies of oscillation. natural frequency the frequency at which a system would vibrate if disturbed and then left alone. forced vibration when a system has an external force applied to it that has its own particular frequency. rarefractions expansions in a longitudinal wave compressions compressed part of a longitudinal wave. crest when transverse wave is above equilibrium position. trough when transverse wave is below equilibrium position.