ARMY AEROMEDICAL EXAM AND STUDY GUIDE NEWEST
2024-2025 ACTUAL EXAM 280 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A
Your co-pilot has pain in one tooth, what is it and what do you do? - ANSWER-Land and seek dental
care. it is Barodontalgia (trapped gas disorders of the teeth).
What is the treatment for sinus trapped gas dysbarism? - ANSWER-Stop descent of aircraft and
attempt to clear by valsalva
Define sound - ANSWER-mechanical radiant energy that is transmitted by pressure waves in an
elastic material/medium (such as air) and is the objective cause of hearing
Define noise - ANSWER-sound that is loud, unpleasant or unwanted. However, sound does not have
to be loud
What are the three measurable characteristics of noise? - ANSWER-F.I.D
Frequency
Intensity
Duration
Identify the effects of noise on the body - ANSWER-annoyance, fatigue, speech interference, and
hearing loss
How does noise cause fatigue? - ANSWER-Fatigue can be caused by a number of physiological
responses that have been attributed to noise. Reported responses include effects on blood flow to the
skin, respiration, skeletal muscle tension, and constipation
,How does an annoying noise affect crewmwmbers while they are performing their duties -
ANSWERAnnoying noise can affect pilots while they are performing their duties because it interferes
with concentration
TRUE OR FALSE:
The denser the substance, the faster and longer the sound will travel - ANSWER-TRUE!
The density of the substance determines the speed at which the sound and pressure waves will travel.
The denser the substance, the faster and longer the sound will travel
The Surgeon General has establish ____ as the maximum permissible sound level of continuous,
unprotected exposure to steady-state noise for _____ hrs - ANSWER-85 decibels, 8 hrs
For every _____ decibel noise increases, exposure time is cut in _____ - ANSWER-5, half
For every five decibel noise increases, exposure time is cut in half
Types of hearing loss - ANSWER-Conductive Hearing Loss (impediment in the external or middle ear
Sensorineural Hearing Loss (Cochlea is damaged)
Of the two types of hearing loss, which is considered responsive to medical treatment -
ANSWERConductive Hearing Loss
Of the two types of hearing loss, which is considered permanent and not responsive to medical
treatment - ANSWER-Sensorineural Hearing Loss
Since loud noise exposures usually can be predicted, what is the best way to conserve hearing in such
hazardous noise environments. - ANSWER-Wear hearing protection in high noise environments to
protect hearing.
,The HGU-56 and IHADSS helmets protect against aircraft noise on all but two army aircrafts, what are
they? - ANSWER-UH60 and CH47
What is vibration - ANSWER-a series of oscillations resulting in the displacement and acceleration of
the object (usually the object begins at rest)
the maximum displacement of an object from its position at rest is - ANSWER-Amplitude
the mechanical amplification of vibration by the body occurring at specific frequencies is called -
ANSWERNatural body resonance
A loss of mechanical energy in a vibrating system. causeing the vibration to slow down is know as -
ANSWER-Damping
When does the highest level of vibration occur during flight - ANSWER-Hover to flight and flight to
hover
What are the short-term effects of vibration on the body - ANSWER-Fatigue, respiratory effects,
circulatory effects, motion sickness, disorientation, and pain
How does vibration cause fatigue? - ANSWER-Vibration causes the muscle to contract (exercise)
For example, vibration placed on both calves of a standing subject resulted in the subject experiencing
the sensation of leaning forward (constant exercise)
The result of vibrating frequencies in the diaphragm will cause - ANSWER-Respiratory effects
The result of these "artificial respiration" could lead to hyperventilation if the diaphragm is vibrated at 48
hertz
, What are the long-term effects of vibration on the body - ANSWER-Raynaud's disease,
Backache/back pain, and kidney/lung damage
TRUE OR FALSE:
Backache/back pain in aircrew member may result at an earlier age than normal - ANSWER-TRUE!
Backache/back pain in aircrew member may result at an earlier age than normal. The lumbar spineis
subjected to higher pressures during aircraft operation because the weight of the torso on that part of
the spine while sitting.
what is Raynaud's Disease? - ANSWER-Raynaud's Disease (White finger) occurs to the hands after
prolonged exposure to vibration from power tools, jackhammers, or other such equipment that vibrates
at high frequencies. Trauma occurs in the arterioles and nerve endings in the extremities and limits the
blood flow to that portion of the extremity
Identify the effects of vibration on vision during flight - ANSWER-Vision could be affected due to
vibration in the aircraft; visual instruments may be difficult to read. Helmet mount or night vision devices
may vibrate at 4-12 Hz
At what level is speech distorted from the affects of vibration - ANSWER-Speech can be distorted
during oscillations of 4-12 Hz. Above 12 Hz, speech becomes increasingly difficult to interpret
__________ is the mechanical radiant energy that is transmitted by __________ pressure waves. -
ANSWER-Sound, longitudinal
Newton's First Law - ANSWER-(Law of Inertia) an object in motion tends to stay in motion & an
object at rest tends to stay at rest unless acted upon by an outside force.
Newton's Second Law - ANSWER-Force = Mass x Acceleration
2024-2025 ACTUAL EXAM 280 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A
Your co-pilot has pain in one tooth, what is it and what do you do? - ANSWER-Land and seek dental
care. it is Barodontalgia (trapped gas disorders of the teeth).
What is the treatment for sinus trapped gas dysbarism? - ANSWER-Stop descent of aircraft and
attempt to clear by valsalva
Define sound - ANSWER-mechanical radiant energy that is transmitted by pressure waves in an
elastic material/medium (such as air) and is the objective cause of hearing
Define noise - ANSWER-sound that is loud, unpleasant or unwanted. However, sound does not have
to be loud
What are the three measurable characteristics of noise? - ANSWER-F.I.D
Frequency
Intensity
Duration
Identify the effects of noise on the body - ANSWER-annoyance, fatigue, speech interference, and
hearing loss
How does noise cause fatigue? - ANSWER-Fatigue can be caused by a number of physiological
responses that have been attributed to noise. Reported responses include effects on blood flow to the
skin, respiration, skeletal muscle tension, and constipation
,How does an annoying noise affect crewmwmbers while they are performing their duties -
ANSWERAnnoying noise can affect pilots while they are performing their duties because it interferes
with concentration
TRUE OR FALSE:
The denser the substance, the faster and longer the sound will travel - ANSWER-TRUE!
The density of the substance determines the speed at which the sound and pressure waves will travel.
The denser the substance, the faster and longer the sound will travel
The Surgeon General has establish ____ as the maximum permissible sound level of continuous,
unprotected exposure to steady-state noise for _____ hrs - ANSWER-85 decibels, 8 hrs
For every _____ decibel noise increases, exposure time is cut in _____ - ANSWER-5, half
For every five decibel noise increases, exposure time is cut in half
Types of hearing loss - ANSWER-Conductive Hearing Loss (impediment in the external or middle ear
Sensorineural Hearing Loss (Cochlea is damaged)
Of the two types of hearing loss, which is considered responsive to medical treatment -
ANSWERConductive Hearing Loss
Of the two types of hearing loss, which is considered permanent and not responsive to medical
treatment - ANSWER-Sensorineural Hearing Loss
Since loud noise exposures usually can be predicted, what is the best way to conserve hearing in such
hazardous noise environments. - ANSWER-Wear hearing protection in high noise environments to
protect hearing.
,The HGU-56 and IHADSS helmets protect against aircraft noise on all but two army aircrafts, what are
they? - ANSWER-UH60 and CH47
What is vibration - ANSWER-a series of oscillations resulting in the displacement and acceleration of
the object (usually the object begins at rest)
the maximum displacement of an object from its position at rest is - ANSWER-Amplitude
the mechanical amplification of vibration by the body occurring at specific frequencies is called -
ANSWERNatural body resonance
A loss of mechanical energy in a vibrating system. causeing the vibration to slow down is know as -
ANSWER-Damping
When does the highest level of vibration occur during flight - ANSWER-Hover to flight and flight to
hover
What are the short-term effects of vibration on the body - ANSWER-Fatigue, respiratory effects,
circulatory effects, motion sickness, disorientation, and pain
How does vibration cause fatigue? - ANSWER-Vibration causes the muscle to contract (exercise)
For example, vibration placed on both calves of a standing subject resulted in the subject experiencing
the sensation of leaning forward (constant exercise)
The result of vibrating frequencies in the diaphragm will cause - ANSWER-Respiratory effects
The result of these "artificial respiration" could lead to hyperventilation if the diaphragm is vibrated at 48
hertz
, What are the long-term effects of vibration on the body - ANSWER-Raynaud's disease,
Backache/back pain, and kidney/lung damage
TRUE OR FALSE:
Backache/back pain in aircrew member may result at an earlier age than normal - ANSWER-TRUE!
Backache/back pain in aircrew member may result at an earlier age than normal. The lumbar spineis
subjected to higher pressures during aircraft operation because the weight of the torso on that part of
the spine while sitting.
what is Raynaud's Disease? - ANSWER-Raynaud's Disease (White finger) occurs to the hands after
prolonged exposure to vibration from power tools, jackhammers, or other such equipment that vibrates
at high frequencies. Trauma occurs in the arterioles and nerve endings in the extremities and limits the
blood flow to that portion of the extremity
Identify the effects of vibration on vision during flight - ANSWER-Vision could be affected due to
vibration in the aircraft; visual instruments may be difficult to read. Helmet mount or night vision devices
may vibrate at 4-12 Hz
At what level is speech distorted from the affects of vibration - ANSWER-Speech can be distorted
during oscillations of 4-12 Hz. Above 12 Hz, speech becomes increasingly difficult to interpret
__________ is the mechanical radiant energy that is transmitted by __________ pressure waves. -
ANSWER-Sound, longitudinal
Newton's First Law - ANSWER-(Law of Inertia) an object in motion tends to stay in motion & an
object at rest tends to stay at rest unless acted upon by an outside force.
Newton's Second Law - ANSWER-Force = Mass x Acceleration
