Sound Basics
What type of wave is a sound wave?
What is Longitudinal Wave.
Page: 565
What property of a sound wave determines pitch?
What is frequency.
Page: 575
True or false:
The angle at which a sound wave strices a surface is never equal to the angle at which the sound wave is reflected off the surface.
What is false.
Page: 584
What are the 3 parts of your ear?
What is inner, middle, and outer.
Page: 568
For a longitudinal wave, ______, is the maximum distance the particles in a medium move from their rest positions as the wave passes through the medium.
What is amplitude.
Page: 573
What medium does sound travel fastest in: solid, liquid, or gas?
What is solid.
Page 567
What unit is used to measure the frequency of sound?
What is Hertz (Hz).
Page: 575
What is one way acoustical engineers control sound?
What is developing methods to protect people from noise pollution.
Page 586
Why can wearing a headset while listening to loud music lead to permanent hearing loss?
What is it traps the pressure changes in the ear.
Page: 569
The study of how sound interacts with structures.
What is acoustics.
Page: 585
What do we call the substance through which sound travels?
What is medium.
Page 566
True or False:
The frequency increases if the distance between the listener and the source is decreasing.
What is true.
Page: 576
True or False
Soft materials absorb sound waves to prevent reverberation as the musicians perform.
What is true.
Page: 586
What can you do to prevent hearing loss?
What is wear ear protection.
Page: 569
The change of pitch when a sound source is moving in relation to an observer.
What is doppler effect.
Page: 576
What happens to sound in a vacuum?
What is: It can not travel.
Page: 566
The lowest frequency at which a material naturally vibrates is called its _______.
What is fundamental.
Page: 577
A vessel that takes blood away from the heart.
What is Artery.
Page: 588
What part of the ear vibrates when sound hits it?
What is eardrum.
Page: 569
The process and animal uses to locate an object by means reflected sounds.
What is echolocation.
Page: 587
What causes waves to form?
What is: Vibrations.
Page: 565
What is it called when a compression meets a rarefaction, and the intensity and amplitude decrease?
What is destructive interference.
Page: 576
Ultrasound is safer than X-rays because...
What is it doesn't damage cells.
Page: 588
What can damage the cochlea (a part of your ear)?
What is infection or loud sounds.
Page: 569
The movement of sound waves through a medium.
What is transmission.
Page: 583