Environmental Acoustics MCQ
What is the scientific study of natural and man-made objects underwater?
Answer
Correct Answer:
Underwater acoustics
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What is the branch of psychophysics concerning sound?
Answer
Correct Answer:
Psychoacoustics
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What is the study of the physics of acoustic instruments?
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Correct Answer:
Musical acoustics
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What is the study of the recording, manipulation, and reproduction of audio using electronics?
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Correct Answer:
Electroacoustics
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What is the scientific study of the hearing and calls of animal calls?
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Correct Answer:
Bioacoustics
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What is the science and engineering of achieving good sound within a building?
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Correct Answer:
Architectural acoustics
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What is a cochlear implant?
Answer
Correct Answer:
A surgically implanted neuroprosthesis
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What is a device designed to improve hearing by making sound audible?
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Correct Answer:
Hearing aid
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What is a method for reducing unwanted sound?
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Correct Answer:
Active noise control
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What is the electronic manipulation of acoustic signals?
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Correct Answer:
Acoustic signal processing
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What do people use to create sound?
Answer
Correct Answer:
Musical instrument
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What type of study is Aeroacoustics?
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Correct Answer:
Is the study of noise generated by air movement
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What is the relationship between people and sound called?
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Correct Answer:
Archaeoacoustics
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What is a hydrophone used for?
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Correct Answer:
Recording or listening to underwater sound
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What is the simple definition of particle velocity?
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Correct Answer:
The velocity of a particle in a medium as it transmits a wave
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What is the SI unit of particle velocity?
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What is another name for an electroacoustic transducer?
Answer
Correct Answer:
A loudspeaker
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What type of transducers convert electrical signals into sound?
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Correct Answer:
Electroacoustic
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Electroacoustic transducers used explicitly for what?
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Correct Answer:
Loudspeakers, microphones, particle velocity sensors, hydrophones and sonar projectors
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What is a transducer?
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Correct Answer:
A device for converting one form of energy into another
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What is the SI unit of frequency?
Answer
Correct Answer:
Hertz(Hz)
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What is the name of a type of sound with a higher frequency than 20,000 Hz?
Answer
Correct Answer:
Ultrasound
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Loudness is the perception of what?
Answer
Correct Answer:
Sound pressure
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What is the minimum sound level of a pure tone that an average human ear with normal hearing can hear with no other sound present?
Answer
Correct Answer:
The absolute threshold of hearing
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What is the unit used to measure acoustic pressure?
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What is the local pressure deviation from the ambient atmospheric pressure caused by a sound wave?
Answer
Correct Answer:
Acoustic pressure
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What is the process of refraction?
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Correct Answer:
Redirection of a wave as it passes from one medium to another
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What is the change in direction of a wave front at an interface between two media called?
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Correct Answer:
Reflection
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What is the bending of waves around the corners of an obstacle or through an aperture?
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Correct Answer:
Diffraction
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What is a surface wave in physics?
Answer
Correct Answer:
A mechanical wave that propagates along the interface between differing media
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What are waves that are an example of transverse waves?
Answer
Correct Answer:
Water waves
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What is a transverse wave in physics?
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Correct Answer:
A wave whose oscillations are perpendicular to the direction of the wave's advance
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What are longitudinal waves?
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Correct Answer:
Waves in which the vibration of the medium is parallel
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What does a fluid do under applied shear stress?
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What is the result of an earthquake?
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Correct Answer:
Seismic waves
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What can happen to the noise level during a storm?
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Correct Answer:
Rise to 50 dB
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What does it mean to be judged to be unpleasant, loud, or disruptive to hearing?
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What type of communication is speech?
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What is the ability to perceive sounds through an organ?
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What is a set of strategies to reduce noise pollution or to reduce the impact of that noise?
Answer
Correct Answer:
Noise control or noise mitigation
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What is another name for noise control?
Answer
Correct Answer:
Noise mitigation
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What are typically concerned with the design, analysis and control of sound?
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Correct Answer:
Acoustical engineers
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What is the branch of engineering that deals with sound and vibration?
Answer
Correct Answer:
Acoustical engineering
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Low status sound is sometimes referred to as what?
Answer
Correct Answer:
Infrasound
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What is the name of the sound waves with higher frequencies than the upper audible limit of human hearing?
Answer
Correct Answer:
Ultrasound
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What type of vibration travels as an acoustic wave?
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What is a transmission medium in the case of sound?
Answer
Correct Answer:
A gas, liquid, or solid
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What kind of wave is an oscillation of matter?
Answer
Correct Answer:
A mechanical wave
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What is the result of vibration?
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Correct Answer:
Oscillations occur about an equilibrium point
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What does a mechanical wave transfer through a medium?
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What is the study of mechanical waves in gases, liquids, and solids?
Answer
Correct Answer:
Acoustics
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