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35 Cards in this Set
- Front
- Back
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Loudness of sound depends on
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amplitude
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Pitch of sound depends on
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frequency
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Sonar is used
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to locate objects in water and determine underwater distances
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Blending of fundamental tone and overtones produces a sound's
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timbre
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A sound is music if it has
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definite pitch
pleasing quality rhythm |
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Sound of frequencies below 20 Hz are
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infransonic
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The stirrup is part of the
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middle ear
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The speed of sound depends on
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temperature
density elasticity |
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An example of a percussion instrument
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drum
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science of sound
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acoustics
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Sounds with frequencies about 20,000 Hz
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ultrasonic
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High frequency waves are used in sound navigation and ranging systems called
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sonar
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Amount of energy carried by a wave is determined by its
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intensity
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Sound without pleasing quality and no repeating patterns
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noise
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Sounds produced when sections of a string vibrate separately are
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stringed instruments
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Lowest frequency at which a standing wave is produced
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fundamental frequency
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Speed of sound in air near Earth's surface
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340 m/s
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Series of compressions and rarefactions
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longitudinal wave
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Sound travels slowest in
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gas
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Sound in front of a moving object producing sound will have a
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higher pitch
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What time of sound wave is released in echolocation?
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ultrasonic wave
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What can improve a room's acoustics?
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carpeting
acoustical tile curtains |
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An increase in the speed of sound in air may be due to an increase in
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temperature
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Sound waves are
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longitudinal waves
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A change in the pitch of a sound due to motion of source or observer is
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the doppler effect
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Guitars and cellos are examples of
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stringed instruments
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The hertz is the unit of
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frequency
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Destructive interference causes the sound to become
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quieter
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Thick strings produce a low
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pitch
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As sound travels it loses some of its
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energy
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Destructive interference of sound waves may result in
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dead spots
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Do all humans hear the same thing?
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no
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Sound waves carry
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energy
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All vibrating objects produce
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sound
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Will sound travel in a vacuum?
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NO
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