A sound wave is traveling through a medium. The intensity of the sound is most affected by the _______.
What is the material of the medium.
100
Sound travels fastest through a _______.
What is a solid.
100
Damage to the anvil and stirrup in humans can result in which of the following?
What is hearing impairment.
100
Which part of the ear can cause hearing loss if it fills with fluid or becomes infected?
What is the middle ear.
100
What is an echo?
What is a sound that repeats, caused by the reflection of sound waves.
200
The volume of a sound is determined by _______.
What is the intensity of the vibrations/ amplitude.
200
In which medium will sound travel the slowest?
What is air.
200
What condition would cause a person to need cochlear implants?
What is hearing impairment.
200
Which part of the ear is not damaged by loud noise over a long time?
What is the ear lobe.
200
What occurs when sound waves strike and bounce off of a surface?
What is reflection.
300
The higher the intensity of vibration, the _______.
What is the louder the sound.
300
In which medium will sound travel the fastest?
What are solids?
300
John listens to his MP-3 player for 3-4 hours each day with the volume turned all the way up. A physical result of continuing this activity is ________.
What is permanent hearing loss.
300
Damage to the hair cells and nerve endings in what part of the ear can cause deafness?
What is the cochlea.
300
What sound is produced when an aircraft breaks the "sound barrier"?
What is a sonic boom.
400
What determines the pitch of a sound wave?
What is frequency.
400
Research ships use sound waves to find objects underwater. What happens to the sound waves when they are emitted from the ship?
What is they are reflected off objects they strike in the water.
400
Long term exposure to loud sounds may result in hearing loss. List one way to prevent hearing loss.
What is turn down the volume, wear ear plugs, stand away form loud noises, etc.
400
Which part of the ear vibrates to move the middle ear bones?
What is the ear drum.
400
Energy that can be heard is __________.
What is sound.
500
As a train rushes away from a crossing, the pitch of its horn goes down because sound waves are getting farther apart as the source of the sound moves away. What is the name of this phenomena?
What is the Doppler Effect.
500
A muffled sound is an example of ______.
What is absorption.
500
The two mechanical devices that can help people cope with hearing loss are ____________.
What are cochlear implants and hearing aids.
500
What part of the ear reflects sound toward the ear canal?