Doppler Effect: the change in frequency that occurs when a source of sound is moving relative to the listener<br />Siren on an ambulance<br />
Music: group of sounds that have deliberately been produced to create a regular pattern<br />
Natural Frequencies: frequencies at which an object will vibrate when struck or disturbed<br />A gong will vibrate and produce a loud noise based on how hard you strike it.<br />
Resonance: occurs when an object is made to vibrate at its natural frequencies by absorbing energy from a sound wave or another object vibrating at those frequencies<br />If you take two guitars both tuned the same and place them to where they’re sitting side by side, when you pluck the A string on one guitar you will hear the A string on the other guitar also start to vibrate.<br />
Fundamental Frequency: lowest frequency produced by a vibrating object<br />Your vocal cords are able to produce a low frequency sound, called whispering.<br />
Overtones: higher frequencies<br />Whistles are able to produce high frequencies.<br />
Reverberation: repeated echo of a sound<br />Thunder is an example of reverberation.<br />
Eardrum: a membrane that stretches across the ear canal like a drum head<br />
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