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Lighting and acoustics MCQ

What is the distance between two identical positions in the cycle or wave called?

Amplitude

Wavelength

Sound waves

Frequency

Answer

Correct Answer: Wavelength

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What influences reverberation time?

Width

Length

Volume

Height

Answer

Correct Answer: Volume

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What is a vibration isolator?

A device that repairs vibrating machinery

A machine that produces vibrations

A machine that measures vibrations

A resilient support that tends to isolate a mechanical system from steady state excitation.

Answer

Correct Answer: A resilient support that tends to isolate a mechanical system from steady state excitation.

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What is the definition of Vibration?

Continuous to and fro motion of a body

Displacement of a body from its mean position

A force which oscillates about some specified reference point.

Oscillating motion of a body

Answer

Correct Answer: A force which oscillates about some specified reference point.

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What is the frequency region containing Ultrasounds called?

Hypersonic region

Hydrosonic region

Ultrasonic region

Supersonic region

Answer

Correct Answer: Ultrasonic region

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What does TWA stand for?

Temperature Weighted Average

Total Workplace Average

Time Warner Average

Time Weighted Average

Answer

Correct Answer: Time Weighted Average

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What is STRUCTURE BORNE NOISE?

Noise that arrives at a point of interest by propagation through a gas

Noise that arrives at a point of interest by propagation through a liquid

Noise that arrives at a point of interest by propagation through a vacuum

Noise that arrives at a point of interest by propagation through a solid structure

Answer

Correct Answer: Noise that arrives at a point of interest by propagation through a solid structure

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What is sound transmission loss?

The difference between the sound power level reflected by a partition and that transmitted through that partition.

The difference between the sound power level incident on a partition and that transmitted through that partition.

The difference between the sound power level incident on a partition and that absorbed by that partition.

Answer

Correct Answer: The difference between the sound power level incident on a partition and that transmitted through that partition.

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What is the definition of speech privacy?

The right to freedom of expression and opinion

The right to freedom of thought, conscience and religion

The right to freedom of assembly and association

The degree to which speech is unintelligible between offices.

Answer

Correct Answer: The degree to which speech is unintelligible between offices.

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What is the degree to which speech is unintelligible between offices called?

Speech Intelligibility

Speech Confidentiality

Office Privacy

Speech Privacy

Answer

Correct Answer: Speech Privacy

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What is the definition of speech?

The act of listening.

The act of writing.

Communication of thoughts and feelings by spoken words.

Communication of thoughts and feelings by written words.

Answer

Correct Answer: Communication of thoughts and feelings by spoken words.

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What does a sound level meter do?

A sound level meter records sound.

A sound level meter amplifies sound.

A sound level meter measures sound intensity.

A sound level meter converts sound pressure variations in air into corresponding electronic signals.

Answer

Correct Answer: A sound level meter converts sound pressure variations in air into corresponding electronic signals.

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What is the definition of soundproofing?

The conversion of sound waves into electrical energy.

The prevention of sound from entering or exiting a space.

The study of the behavior of sound.

Building materials that make structures impervious to sound or insulates against sound.

Answer

Correct Answer: Building materials that make structures impervious to sound or insulates against sound.

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What is the sound pressure level, in decibels, of a sound?

The sound pressure multiplied by the reference pressure

20 times the logarithm to the base 10 of the ratio of the sound pressure to the reference pressure.

The sound pressure divided by the reference pressure

10 times the logarithm to the base 20 of the ratio of the sound pressure to the reference pressure.

Answer

Correct Answer: 20 times the logarithm to the base 10 of the ratio of the sound pressure to the reference pressure.

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Sound pressure is the difference between the ____________.

Loudness of the sound wave and the total instantaneous pressure

Static pressure and the loudness of the sound wave

Static pressure and the intensity of the sound wave

Static pressure and the total instantaneous pressure

Answer

Correct Answer: Static pressure and the total instantaneous pressure

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What is the decibel scale used to measure?

SOUND LEVEL

TEMPERATURE

WEIGHT

SOUND WAVES

Answer

Correct Answer: SOUND LEVEL

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What is a sound barrier?

A material that when placed around a source of noise inhibits the transmission of that noise beyond the barrier.

A device that amplifies sound

A type of dance

A material that prevents sound from being transmitted

Answer

Correct Answer: A material that when placed around a source of noise inhibits the transmission of that noise beyond the barrier.

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What is the sound absorption coefficient?

The rate at which energy is lost in a system

The amount of energy required to make a sound.

The fraction of energy striking a material or object that is reflected.

The fraction of energy striking a material or object that is not reflected.

Answer

Correct Answer: The fraction of energy striking a material or object that is not reflected.

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What is the definition of sound absorption?

The property possessed by materials, objects and air to reflect sound waves.

The property possessed by materials, objects and air to conduct sound waves.

The property possessed by materials, objects to refract sound waves.

The property possessed by materials, objects and air to convert sound energy into heat.

Answer

Correct Answer: The property possessed by materials, objects and air to convert sound energy into heat.

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What is sound?

Oscillation in pressure, stress particle displacement, particle velocity in a medium

Particle velocity in a medium

Displacement in a medium

Change in pressure

Answer

Correct Answer: Oscillation in pressure, stress particle displacement, particle velocity in a medium

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What does the SMOKE DEVELOPED INDEX compare the smoke development of a particular material to?

Wood and metal

Soil and water

Brick and mortar

Concrete panels and red oak.

Answer

Correct Answer: Concrete panels and red oak.

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What is the sound level at the listener’s ear of a speaker above the background noise level?

Signal to noise ratio

Amplitude

Frequency

Decibels

Answer

Correct Answer: Signal to noise ratio

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What is the definition of "Septum?"

A type of bacteria

The study of ancient buildings

A small, delicate bone in the ear

A thin layer of material between 2 layers of absorptive material.

Answer

Correct Answer: A thin layer of material between 2 layers of absorptive material.

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What does the Sabine Formula allow designers to do?

Plan reverberation time in a room in advance of construction and occupancy

Make Formulas

Design rooms

Teach children mathematics

Answer

Correct Answer: Plan reverberation time in a room in advance of construction and occupancy

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What does SABIN stand for?

Square Area Become Invest Now

Securities and Exchange Board of India

A unit of sound absorption based on one square foot of material

Sound Amplification Based on Individual Noise

Answer

Correct Answer: A unit of sound absorption based on one square foot of material

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How does a sound wave lose energy?

By reflection

By refraction

By absorption

By scattering

Answer

Correct Answer: By absorption

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What is a frequency at which resonance exists?

Echo

Reverberation

Wavelength

Resonant frequency

Answer

Correct Answer: Resonant frequency

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What is the meaning of the word "resonance"?

The wavelength of sound waves.

The speed of sound waves.

The frequency of sound waves.

The emphasis of sound at a particular frequency.

Answer

Correct Answer: The emphasis of sound at a particular frequency.

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What does REFLECTION measure?

The amount of sound wave energy (sound) that is transmitted through a surface.

The amount of sound wave energy (sound) that is reflected off a surface.

The amount of sound wave energy (sound) that is absorbed by a surface.

The amount of sound wave energy (sound) that is produced by a surface.

Answer

Correct Answer: The amount of sound wave energy (sound) that is reflected off a surface.

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What is the loss of hearing due primarily to the aging process called?

Meniere's disease

Presbycusis

Tinnitus

Deafness

Answer

Correct Answer: Presbycusis

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What is presbycusis?

A disorder characterized by unusual movements

The loss of hearing due primarily to the aging process.

A disease that primarily affects the joints

A medical condition in which the pupil of the eye cannot constrict

Answer

Correct Answer: The loss of hearing due primarily to the aging process.

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What is PITCH?

The length of time a sound lasts.

The perceived auditory sensation of sounds expressed in terms of high or low frequency stimulus of the sound.

The degree to which a sound is loud or soft.

The timbre of a sound.

Answer

Correct Answer: The perceived auditory sensation of sounds expressed in terms of high or low frequency stimulus of the sound.

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What does the medical term "OTOLARYNGOLOGIST" refer to?

A doctor specializing in disorders and treatment of the ear, nose, and throat disorders.

A doctor specializing in disorders and treatment of the eye, nose, and throat disorders.

A doctor specializing in disorders and treatment of the ear, nose, and throat diseases.

A doctor specializing in disorders and treatment of the ear, nose, and mouth disorders.

Answer

Correct Answer: A doctor specializing in disorders and treatment of the ear, nose, and throat disorders.

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What is the full form of "OTOLOGIST"?

A doctor who specializes in the study of ears

A doctor who treats hearing problems

A doctor who performs surgeries

Doctor specializing in the structure, disorders and treatment of the ear.

Answer

Correct Answer: Doctor specializing in the structure, disorders and treatment of the ear.

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What is the study of the ear called?

OTOLOGY

Otolaryngology

Dermatology

Ophthalmology

Answer

Correct Answer: OTOLOGY

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What are OCTAVE BANDS?

A type of insect

Sounds that contain energy over a wide range of frequencies

A part of the human ear

The highest note on a piano

Answer

Correct Answer: Sounds that contain energy over a wide range of frequencies

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What is the meaning of NR?

Nearly Right

Not Required

No Response

Noise Reduction

Answer

Correct Answer: Noise Reduction

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What does NORMALIZED NOISE REDUCTION mean?

Noise Reduction and a 0.5 second reverberation time in the receiving room are unrelated.

Noise Reduction not related to a 0.5 second reverberation time in the receiving room.

Noise Reduction caused by a 0.5 second reverberation time in the receiving room.

Noise Reduction normalized as a function of a 0.5 second reverberation time in the receiving room.

Answer

Correct Answer: Noise Reduction normalized as a function of a 0.5 second reverberation time in the receiving room.

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What does NNR stand for?

Normalized Noise Reduction

Noise Negation Ratio

Noise Noise Reduction

Noise Negation Reaction

Answer

Correct Answer: Normalized Noise Reduction

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What do noise criteria curves measure?

Sound levels at loudest locations in a room

Sound levels at softest locations in a room

Sound levels at average locations in a room

Sound levels at noisiest locations in a room

Answer

Correct Answer: Sound levels at loudest locations in a room

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What does NC stand for?

Noise Committee

Noise Council

Noise Criteria

National Council

Answer

Correct Answer: Noise Criteria

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What is the definition of noise?

A device that amplifies sound

Unwanted sound that is annoying or interferes with listening.

A soft sound

A repeating sound

Answer

Correct Answer: Unwanted sound that is annoying or interferes with listening.

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What does MOUNTING represent?

A structure that supports or holds something

The highest point of a hill or mountain

Standards established by ASTM to represent typical installation for the purpose of testing materials.

The process of attaching a horse to a rider

Answer

Correct Answer: Standards established by ASTM to represent typical installation for the purpose of testing materials.

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What does MASS stand for?

The measure of how much of an item is produced.

None of the above.

The measure of the amount of matter in an object.

The fundamental property of a material relevant to sound transmission loss through that material.

Answer

Correct Answer: The fundamental property of a material relevant to sound transmission loss through that material.

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What does masking refer to?

The process of hiding

The process of covering up

The process by which the threshold of hearing of one sound is raised due to the presence of another.

The process of concealment

Answer

Correct Answer: The process by which the threshold of hearing of one sound is raised due to the presence of another.

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What is the average deviation above and below the static value due to sound waves called?

Frequency

Vibration

Sound Pressure

Loudness

Answer

Correct Answer: Sound Pressure

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What is an acoustical treatment plan for rooms in which one end is highly absorbent and the other end is reflective and diffusive?

Reflective and diffusive

Absorbent

LIVE END/ DEAD END

DEAD END/ LIVE END

Answer

Correct Answer: LIVE END/ DEAD END

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What is the drop in sound level for every doubling of distance?

9 dB

6 dB

3 dB

12 dB

Answer

Correct Answer: 6 dB

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What is the mean root square of the instantaneous level over a given period of time called?

Root

Square

Level

Intensity

Answer

Correct Answer: Intensity

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Which of the following is an example of impact sound?

The sound of a rock hitting water

The sound of two rocks hitting water

The sound of two rocks hitting each other

The sound of water hitting a rock

Answer

Correct Answer: The sound of two rocks hitting each other

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What type of sound is produced by the collision of two solid objects?

Impact sound

Percussion sound

Vibrational sound

Volcanic sound

Answer

Correct Answer: Impact sound

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What does the unit "Hz" stand for?

Homework

Henry

Hertz

Answer

Correct Answer: Hertz

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What is hearing impairment?

A condition that only affects infants.

A condition that only affects the elderly.

A degree of hearing loss, temporary or permanent due to many causes.

A condition that only affects those who work in noisy environments.

Answer

Correct Answer: A degree of hearing loss, temporary or permanent due to many causes.

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What does the word "Frequency" mean?

The number of times an event happens

The number of oscillations or cycles per unit of time.

The amount of time between two events

The number of units of time

Answer

Correct Answer: The number of oscillations or cycles per unit of time.

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Sound waves from a source outdoors are called what?

Reflection

Refraction

Diffraction

Free Field

Answer

Correct Answer: Free Field

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What is the main difference between free field and reverberant sound?

Free field is indoors while reverberant is outdoors

Free field is artificial while reverberant is natural

Free field has no obstructions while reverberant sound does

Free field has sound waves while reverberant does not

Answer

Correct Answer: Free field has no obstructions while reverberant sound does

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What does the word "Footfall" mean?

A unit of measurement for length

A type of shoe

A form of impact noise that occurs when feet come into contact with a floor.

The act of walking

Answer

Correct Answer: A form of impact noise that occurs when feet come into contact with a floor.

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What is the FIELD SOUND TRANSMISSION CLASS?

A sound transmission rating obtained under "real-life" conditions.

The number of decibels produced by a given noise source

A measure of a vehicle's engine volume

The sound made by a fieldmouse

Answer

Correct Answer: A sound transmission rating obtained under "real-life" conditions.

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What is the full form of FSTC?

Field Standard Transmission Class

Field Service Transmission Class

Full Sound Transmission Class

Field Sound Transmission Class

Answer

Correct Answer: Field Sound Transmission Class

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What does Flanking refer to?

A dance move

The sound a dog makes

The transmission of sound around the perimeter or through holes within partitions

A military strategy

Answer

Correct Answer: The transmission of sound around the perimeter or through holes within partitions

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What does FLAME SPREAD indicate?

Propagation of flame across a sample

The rate at which a fuel is consumed

Heat released by a burning substance

The amount of air needed for complete combustion

Answer

Correct Answer: Propagation of flame across a sample

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What is the effective level?

The lowest point in a wave.

The highest point in a wave.

The root mean square of the instantaneous level over a given period of time.

The average of the highest and lowest points in a wave.

Answer

Correct Answer: The root mean square of the instantaneous level over a given period of time.

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What is the effective level also known as?

The lowest level

The highest level

The average level

The root mean square

Answer

Correct Answer: The average level

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What is the result of an echo flutter?

A faint duplicate of the original sound signal.

A clicking, ringing, or hissing sound after the original sound signal has ceased.

No sound after the original sound signal has ceased.

A loud duplicate of the original sound signal.

Answer

Correct Answer: A clicking, ringing, or hissing sound after the original sound signal has ceased.

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What does ECHO FLUTTER produce?

A continuous sound

A clicking, ringing or hissing sound

A loud sound

A soft sound

Answer

Correct Answer: A clicking, ringing or hissing sound

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What does ECHO stand for?

Every Child Has Opportunities

Editing Corrects Homophones Objectively

Reflected sound producing a distinct repetition of the original sound.

Early Childhood Hearing Outreach

Answer

Correct Answer: Reflected sound producing a distinct repetition of the original sound.

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What is the early decay time derived from?

The sound intensity level

The reverberation time decay curve

The sound pressure level

The frequency response

Answer

Correct Answer: The reverberation time decay curve

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What is the definition of diffusion?

The bending of sound waves around obstacles

The reflection of sound waves from a surface

The scattering or random reflection of a sound wave from a surface.

The amplification of sound waves

Answer

Correct Answer: The scattering or random reflection of a sound wave from a surface.

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What does DEAF stand for?

Delay, Eliminate, and Avoid Failure

Design, Establish, Analyze, and Finish

Data, Evolve, Analyze, and Formulate

Loss of auditory sensation with or without use of assistive listening device.

Answer

Correct Answer: Loss of auditory sensation with or without use of assistive listening device.

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What is deflection?

The distance an elastic body or spring moves when subjected to a static or dynamic force.

A measure of the electrical resistance of a conductor.

The property of a material that determines how much it will bend under load.

The degree to which a substance slows the passage of electromagnetic radiation

Answer

Correct Answer: The distance an elastic body or spring moves when subjected to a static or dynamic force.

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What is the unit for distance an elastic body or spring moves when subjected to a static or dynamic force?

Meters

Seconds

Inches or mm

Answer

Correct Answer: Inches or mm

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What is decibel?

The loudness of a sound is measured in decibels.

Decibels are used to measure the amplitude of a sound wave.

A decibel is a unit used to measure the Intensity of a sound wave.

Sound level in decibels as a logarithmic ratio.

Answer

Correct Answer: Sound level in decibels as a logarithmic ratio.

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What is DAMPING?

The amplification of vibratory energy in solid media and structures with time or distance.

The dissipation of vibratory energy in solid media and structures with time or distance.

The reflection of vibratory energy in solid media and structures.

The transmission of vibratory energy in solid media and structures.

Answer

Correct Answer: The dissipation of vibratory energy in solid media and structures with time or distance.

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What is the unit for CYCLES PER SECOND?

The number of oscillations that occur in the time frame of one day.

The number of oscillations that occur in the time frame of one second.

The number of oscillations that occur in the time frame of one minute.

The number of oscillations that occur in the time frame of one hour.

Answer

Correct Answer: The number of oscillations that occur in the time frame of one second.

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How many oscillations occur in one second?

100 cycles

60 cycles

2 cycles

1 cycle

Answer

Correct Answer: 1 cycle

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What is the CYCLE in acoustics?

The loudness of a sound.

The pitch of a sound.

The complete oscillation of pressure above and below the atmospheric static pressure.

The time it takes for a sound wave to travel one wavelength.

Answer

Correct Answer: The complete oscillation of pressure above and below the atmospheric static pressure.

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What is the function of the cochlea?

Helps maintain balance

Aids in frequency recognition

Allows for movement

Assists with hearing

Answer

Correct Answer: Aids in frequency recognition

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What is the cocktail party effect?

The mutual attraction of alcohol molecules and water molecules.

Sound in a noisy crowded room generated mostly by conversation.

A measure of a cocktail's alcoholic strength.

Conversation among groups at a cocktail party.

Answer

Correct Answer: Sound in a noisy crowded room generated mostly by conversation.

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What does CLOUD stand for in acoustical industry terms?

An atmospheric condition caused by a small change in pressure or temperature

An acoustical panel suspended in a horizontal position from the ceiling/roof structure.

A group of interconnected computers and computer networks that share a common infrastructure

A large mass of water vapor that condenses into a visible body

Answer

Correct Answer: An acoustical panel suspended in a horizontal position from the ceiling/roof structure.

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What is the definition of "boominess"?

An uncontrolled amount of bass in the sound reproduced by a loudspeaker.

A deep prolonged sound.

A sharp explosive noise.

The state or quality of being bool.

Answer

Correct Answer: An uncontrolled amount of bass in the sound reproduced by a loudspeaker.

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What does BEL stand for?

British Empire League

Base Energy Level

Bell Telephone Laboratories

A measurement of sound intensity named in honor of Alexander Graham Bell.

Answer

Correct Answer: A measurement of sound intensity named in honor of Alexander Graham Bell.

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What is the meaning of the word "barrier" in the context of effective communication?

The process of encoding and decoding messages

Anything physical or an environment that interferes with communication or listening.

A way to reduce noise in a communication channel

A method of nonverbal communication

Answer

Correct Answer: Anything physical or an environment that interferes with communication or listening.

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What does BAFFLE mean?

A type of musical note

An ancient Peruvian instrument

A device for heating a room

A free-hanging acoustical sound absorbing unit

Answer

Correct Answer: A free-hanging acoustical sound absorbing unit

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What does AMBIENT NOISE refer to?

All of the above

Noise level from only HVAC

Noise level in a space from all sources

Noise level from outside the space only

Answer

Correct Answer: Noise level in a space from all sources

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What is the definition of Ambient Noise?

Noise that is not from outside the space

Noise that is not from the HVAC system

A type of music

Noise level in a space from all sources such as HVAC or extraneous sounds from outside the space.

Answer

Correct Answer: Noise level in a space from all sources such as HVAC or extraneous sounds from outside the space.

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What does A WEIGHTINGfilter out?

No frequency sounds

All frequency sounds

Higher frequency sounds

Lower frequency sounds

Answer

Correct Answer: Lower frequency sounds

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What does a weighting do in a sound meter?

Allows the meter to largely ignore lower frequency sounds

Stops the sound

Counts the sound

Weighs the sound

Answer

Correct Answer: Allows the meter to largely ignore lower frequency sounds

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What does attenuation refer to?

The reduction of sound energy gradually as a function of distance traveled through a medium.

The increase of sound energy gradually as a function of distance traveled through a medium.

The reflection of sound energy off of surfaces.

The ability of a medium to transmit sound energy.

Answer

Correct Answer: The ability of a medium to transmit sound energy.

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What is an ASSISTIVE LISTENING DEVICE?

An electronic device that provides amplification of sound to a hearing-impaired person.

A device that helps people with their balance

A device that helps people with their vision

A device that helps people with their hearing

Answer

Correct Answer: An electronic device that provides amplification of sound to a hearing-impaired person.

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What is the area effect?

The area of an absorption material has no effect on its sound-absorbing ability.

Absorption materials cannot be spaced apart to have greater sound-absorbing ability.

Acoustical materials spaced apart can have greater absorption than the same amount of material butted together.

The size of an absorption material has no effect on its sound-absorbing ability.

Answer

Correct Answer: Acoustical materials spaced apart can have greater absorption than the same amount of material butted together.

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What is the measure of speech intelligibility influenced by Acoustical Environment rated from 0.01 to 1.00 called?

Amplitude

Decibel

Sonority

Articulation Index

Answer

Correct Answer: Articulation Index

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What is the single number rating used for acoustical ceilings and acoustical screens for speech privacy purposes?

ARTICULATION CLASS

NOISE REDUCTION COEFFICIENT (NRC)

ROOM NOISE CRITERIA (RNC)

SOUND TRANSMISSION CLASS (STC)

Answer

Correct Answer: ARTICULATION CLASS

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What is the purpose of an Articulation Class?

To classify different types of art

To compare acoustical ceilings and acoustical screens for speech privacy purposes

To determine the value of a company

To rate the quality of a piece of artwork

Answer

Correct Answer: To compare acoustical ceilings and acoustical screens for speech privacy purposes

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What is the purpose of architectural acoustics?

To protect the occupants from noise

To control noise in a building space

To evaluate the acoustical quality of a space

To support the communications function within the space

Answer

Correct Answer: To control noise in a building space

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What is AIRBORNE SOUND?

A musical group

Sound that reaches the point of interest by propagation through the air.

Sound produced by an aircraft in flight

A brand of loudspeakers

Answer

Correct Answer: Sound that reaches the point of interest by propagation through the air.

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What is Airborne Noise?

Noise that arrives at a point of interest by propagation through the air.

Noise generated by the vibration of air

Noise generated by impact between two solid surfaces

Noise generated by the movement of air

Answer

Correct Answer: Noise that arrives at a point of interest by propagation through the air.

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What is impedance?

The sound pressure produced in a medium.

The wavelength of a sound wave in a medium.

The speed of sound in a medium.

The resistance to the flow of sound through a medium.

Answer

Correct Answer: The resistance to the flow of sound through a medium.

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What does an acoustical consultant do?

Provide advice on acoustical requirements and noise control

Design websites

Draw pictures

Build houses

Answer

Correct Answer: Provide advice on acoustical requirements and noise control

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What does ACOUSTICAL ANALYSIS refer to?

The study of the effects of sound on humans

The study of the production, propagation, and reception of sound

A review of a space to determine the level of reverberation or reflected sound in the space

The study of the effects of sound on animals

Answer

Correct Answer: A review of a space to determine the level of reverberation or reflected sound in the space

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What does an acoustic calibrator do?

Used to measure the sound pressure level of a noise source

Used to measure the sound intensity level of a noise source

Provides a reference noise source to calibrate the performance of sound level meters

Used to calculate the sound absorption coefficient of a material

Answer

Correct Answer: Provides a reference noise source to calibrate the performance of sound level meters

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What does the word "acoustical" mean?

The study of music

The study of the human voice

The properties of a material to absorb or reflect sound

The study of sound

Answer

Correct Answer: The properties of a material to absorb or reflect sound

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What does the Acoustical Society of America do?

Publishes standards and information related to the study and applications of acoustics.

Grants awards related to acoustics.

Conducts research on acoustics.

Establishes an organization that studies acoustics.

Answer

Correct Answer: Publishes standards and information related to the study and applications of acoustics.

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What is the name of a sensor that contains an electrical output that is directly proportional to the acceleration component of the vibration?

Accelerometer

Velocity

Displacement

Amplitude

Answer

Correct Answer: Accelerometer

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What does an accelerometer measure?

Sound

Light

Vibration

Heat

Answer

Correct Answer: Vibration

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What is the science of sound called?

Waves

Ultrasound

Acoustics

Sound

Answer

Correct Answer: Acoustics

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