Waves and Sound

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12 Terms

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Vibration

the motion of an object repeated over and over again with the same time interval

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Frequency

number of cycles per second

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Period

The time required to complete one cycle

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Transverse Wave

A wave in which particles travel perpendicular to the direction of motion. They consist of crests (high/antinode) and trough (low/node)

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Longitudinal Waves

A wave in which particles travel with the direction of motion. They consist of compressions(antinode) and rarefactions(node)

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Sound

A longitudinal wave that which is the energy made by air molecules vibrating

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Audible Sound

20 hz - 20 000 hz

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Infrasonic

below 20 hz

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Ultrasonic

above 20 000 hz

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Mach

the ratio of air speed to the

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