Quiz: Physiological Aspects
• Due Mar 4 at 11:59pm
The quiz:
• Covers the Learn material from Module 1: Week 1 — Module 3: Week 3.
• Contains 25 multiple-choice and true/false questions.
• Is limited to 60 minutes.
• Allows 1 attempt.
• Is worth 50 points.
Submit this assignment by 11:59 p.m. (ET) on Monday of Module 3: Week 3.
Attempt History
Attempt
Time
Score
LATEST
Attempt 1
56 minutes
36 out of 50
Correct answers are hidden.
Score for this quiz: 36 out of 50
Submitted Mar 4 at 8:03pm
This attempt took 56 minutes.
Question 1
2 / 2 pts
The organ of hearing is the _________.
auditory canal
semicircular canals
cochlea
anvil
Question 2
2 / 2 pts
A normal pilot without using any preventive measures will experience ________ when
pulling +6GZ.
blackout
G-LOC
grayout
redout
I Question 3
0 / 2 pts
Type III (incapacitating) SD occurs when you are aware of your disorientation and can
properly take positive control of your aircraft.
True
False
Question 4
2 / 2 pts
Noise can contribute to fatigue.
True
False
Question 5
2 / 2 pts
G-LOC normally occurs at a sustained G of about _________ +GZ.
1
2
3
5
Question 6
2 / 2 pts
The most dangerous symptom associated with moderate to high levels of +GZ is
________ .
G-LOC
Blackout
Grayout
Redout
Question 7
2 / 2 pts
__________ leads to a complete loss of vision from oxygen starvation in the retinal
receptors.
G-LOC
Blackout
Grayout
Redout
Question 8
2 / 2 pts
The frequency range for normal human hearing is between about ________ and ________
Hz.
20; 20,000
500; 3,000
500; 50,000
5,000; 30,000
I Question 9
0 / 2 pts
A comparison of speech intensity to noise intensity is called the _________ .
intensity ratio (IR)
pitch ratio (PR)
loudness ratio (LR)
signal-to-noise ratio (SNR)
Question 10
2 / 2 pts
The measurement of sound intensity is logarithmic and a rule of thumb for perceived
loudness is that it doubles for every 10 dB increase in sound intensity.
True
False
I Question 11
0 / 2 pts
Sensory illusions involving primarily the semicircular canals are often referred to as
_________ illusions.
somatogravic
somatogyral
somatological
G-excess
Question 12
2 / 2 pts
The physical characteristic of sound which gives the physiological and psychological
sensation of pitch is called _________.
intensity
frequency (Hz)
wavelength (dB)
modulation
Question 13
2 / 2 pts
Aircraft engine noise is usually _________ during takeoff and ________ during descent.
higher; higher
lower; higher
lower; lower
higher; lower
Question 14
2 / 2 pts
Pilots are exposed to elevated levels of noise and are at higher risk of developing noise-
induced hearing loss (NIHL).
True
False
Question 15
2 / 2 pts
After recovering from a prolonged spin (or spiral dive), you may experience a strong
sensation of turning in the _________ direction of the original angular motion. This may
cause you to inadvertently enter a spin (or spiral dive) in the _________ direction of the
original spin (or spiral dive).
opposite; opposite
same; same
opposite; same
same; opposite
Question 16
2 / 2 pts
When both speech and noise levels are about the same (SNR = 1), most speech
communication is understood because of the context in which the individual words are
used.
True
False
Question 17
2 / 2 pts
The ratio of applied acceleration (a)—or aircraft-maneuver-induced acceleration—over
the acceleration of gravity (g), is used to describe the total acceleration (or “G-force”) on
an aircraft and its pilot (G = a/g).
True
False
Question 18
2 / 2 pts
_________ acceleration occurs when there is a change in the direction of an object, such
as occurs during a turn, or during a push into, or a pullout from, a dive.
Radial
Angular
Linear
Circular
I Question 19
0 / 2 pts
Sound wave energy is substantially reduced when passing from a gas (air in outer ear)
to a liquid (fluid in inner ear); but the unique mechanical arrangement of the middle ear
makes up for this limitation by amplifying the sound energy by as much as 25 dB.
True
False
Question 20
2 / 2 pts
Airframe noise is partly a function of indicated airspeed (dynamic air pressure)
expressed as 1/2ρV2, where ρ (rho) is the density of the air and V is the true airspeed.
Therefore, the slower the airspeed and higher the altitude (lower air density), the greater
the aerodynamic noise created around the aircraft’s fuselage.
True
False
Question 21
2 / 2 pts
________ acceleration (+GZ) is headward acceleration (or eyeballs down) that you could
experience in a steep turn, an inside loop or a pull-up from a dive.
Positive transverse
Positive vertical
Negative lateral
Negative vertical
I Question 22
0 / 2 pts
During the first decade of this century alone, almost 1,000 people lost their lives in
airline accidents involving SD.
True
False
I Question 23
0 / 2 pts
Grayout and blackout are caused by ________ hypoxia.
Stagnant
hypoxic
histotoxic
hypemic
I Question 24
0 / 2 pts
________ orientation (sometimes called postural or proprioceptive or kinesthetic
orientation) involves sensors in our muscles, tendons, skin, and joints that respond only
to acceleration (including gravity) and is often referred to as the “seat of the pants”
sensations.
Somatosensory
Vestibular
Otolith
Coriolis
Question 25
2 / 2 pts
The organ in which the back-and-forth movement of tiny hair cells hair cells is converted
into neural impulses that are sent to the auditory cortex of the brain and interpreted as
sound, is the _________.
hammer
cochlea
anvil
semicircular canals
Quiz Score: 36
