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### 24 Cards in this Set

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 Energy can be transferred from a source to a reciever without the transfer of matter between two points Wave motion High points of a sine wave Crests The low points of a sine wave Troughs The distance from the top of one crest to the top of the next one. Wavelegnth Related to the frequency and wavelegnth of the waves. Wave speed wvlgth x freq How frequently a vibration occurs frequency The time for one complete vibration Period The distance from the midpoint to the crest or trough of the wave Amplitude Right-angled, sideways motion. The motion is transverse to the direction the wave travels. Transverse wave Parts that make up a medium move to and fro in the same direction in which the wave travels. Motion along the direction of the wave, not at right angles Longitudinal wave When one the crest of one wave overlaps the crest of another, their individual effects add together to produce a wave of increased amplitude Consturctive interference When the crest of one wave overlaps the trough of another, their individual effects are reduced. Destructive interference A wave in which parts of the wave, called nodes, are stationary Standing wave Give 3 examples of everyday longitudinal and trasverse waves T- An echo Reflection Must be present for sound to travel through medium A pulse of compressed air Compression Travels at 340 m/s Speed of sound in air The _____ of a sound relates to its frequency Pitch High frequency produces a _____ note, and low frequency produces a ____ note High/low Depends on the amplitude of pressure variations within the sound wave. Intensity A physiological sensation Loudness Phenomenon that occurs when the frequency of forced vibrations on an object matches the object's natural frequency,producing a dramatic increase in amplitude Resonance Chnage in frequency of a wave of sound or light due to the motion of the source or the reciever. Doppler effect