Part 1.4

Question 1

A person might benefit from a hearing aid, even though his loss is so severe that amplification
will not enable him to understand speech readily because
a) his hearing, though bad now, could, because of lack of exercise, become much
worse
b) the hearing aid will cure his deafness
c) the hearing aid may enable him to perceive sound clues
d) all hard of hearing persons should be fitted with a hearing aid

Answer 1

c) the hearing aid may enable him to perceive sound clues

Question 2

Frequency is related to the psychological factor of

a) pitch
b) compression
c) loudness
d) duration

Answer 2

a) pitch

Psychological v empirical.

Question 3

The normal intact tympanic membrane is pink to bright red in color

True
False

Answer 3

False

Pearly grey.

Question 4

As a sound wave travels it consists at time of molecules that are closer together. This
part of the wave is called

a) decibel
b) frequency
c) compression
d) rarefaction

Answer 4

c) compression

Question 5

A sensorineural hearing loss is a disorder in the

a) Eustachian tube
b) middle ear
c) inner ear
d) ossicles

Answer 5

c) inner ear

The inner ear is where the ‘sensory nerves’ are.

Question 6

A hearing aid

a) improves your hearing
b) improves your signal to noise ratio
c) amplifies sound
d) is an absolute necessity for those people who can’t learn how to read lips.

Answer 6

c) amplifies sound

A hearing aid will not improve your hearing. It will enable you to make the best of the hearing you have.
B might be or might not be, but C is so much more simple.

Question 7

If a sound consists of more than one frequency without a pattern, it is called a

a) sine wave
b) noise
c) reverberation
d) transverse wave

Answer 7

b) noise

No pattern equals chaos.

Question 8

What is the difference between a transverse wave and a sine wave?

Answer 8

If the medium is displaced perpendicular to the motion of the wave, it’s “transverse”.
If the medium is displaced along the motion of the wave, it’s “longitudinal”.

Light is transverse, sound is longitudinal (sine).

The longitudinal (sine) wave points move forward and backward in the same direction as the wave is moving as it passes, while in the transverse wave the points move up and down, in a direction perpendicular to the direction the wave is moving.

Question 9

A hearing aid can be described as

a) an all-in-the-ear instrument
b) an ear trumpet
c) a body worn instrument
d) any of the above

Answer 9

d) any of the above

Question 10

Determining minimum intensity levels at which the individual responds to selected frequencies
is accomplished with the

a) tympanometer
b) tuning fork
c) audiometer
d) probe microphone

Answer 10

c) audiometer

Question 11

The cause, cure and treatment of tinnitus

a) have been well understood for the last 25 years
b) have been understood for the last 10 years
c) are of little importance to the hearing aid specialist
d) are not well understood

Answer 11

d) are not well understood

D is the only one that makes sense.

Question 12

If sound consists of only one frequency, it is called a

a) reverberation
b) noise
c) pure tone
d) complex sound

Answer 12

c) pure tone

Question 13

Probably the most common cause of otitis media is

a) sinus infection
b) a cold
c) allergy
d) measles

Answer 13

b) a cold

The key word is ‘common.’

Question 14

When the impression material is removed from the mixing bowl, the packing of the ear should be completed within

a) 30 seconds
b) 45 seconds
c) 60 seconds
d) 90 seconds

Answer 14

a) 30 seconds

The longer you wait the sooner the material sets.

Question 15

Intensity and frequency can be measured by electrical instruments

True
False

Answer 15

True

True. Compare to psychological equivalents, which cannot be measured.

Question 16

The human ear

a) is associated with equilibrium
b) has most of its important mechanism hidden deep within the skull
c) helps us tell which direction we are moving in
d) a, b, and c

Answer 16

d) a, b, and c