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Published byElizabeth Black Modified over 9 years ago
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Sound Notes
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Sound is a Wave Sound is a type of ____________________ Sound is a wave that is produced by a ___________________ and travels through matter. A ___________________is a rapid, back-and-forth motion. Because the medium vibrates in the same direction as the wave travels, _____________________and ____________________.
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How sound waves are produced. A vibrating object __________________ on the medium around it and sends out ___________________________________. Your vocal cords make sound waves.
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The highest frequency that humans can hear is 20,000 hertz. Above 20,000 hertz the waves are called _______________
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________________________________ Pitch depends on the ________ of a sound wave. Pitch is the ______________________ of a sound. A low-frequency wave with a _____ wavelength = _____________. A high-frequency wave with a _____ wavelength = _____________.
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The motion of the source of a sound affects its pitch. _____________ - the changing in perceived pitch that occurs when the source or the receiver of a sound is moving.
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IHow the Ear Detects Sound
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Sound waves vibrate particles The ____________ rapidly. The particles in the air in front of the drum become compressed. When the drum moves the opposite way, a space opens up between the _____________. These are the compressions and _______________ which are Longitudinal waves.
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Sound is a ______________wave (must have a _______________) and cannot travel through a vacuum (___________________). Sound travels faster through __________ than in gases or ________.
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Intensity Determines Loudness Intensity of a sound is the ________________ the sound wave has. A ___________ is the unit used to measure sound intensity.
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________________ is the increasing of the strength of an electrical signal and is used to increase the intensity of a sound wave. Intense sound can damage hearing.
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Transverse Wave w/ High Amplitude
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Transverse Wave with a Long Wavelength
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Transverse Wave w/ a low frequency.
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Transverse wave w/ little energy.
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Transverse wave w/ a high pitch.
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Longitudinal wave w/ high frequency
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Longitudinal wave w/ high amplitude.
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