©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
ARDMS- SPI Exam Questions And Answers
2025 Update.
The horizontal axis, or x-axis - Answer✔Runs side to side
The vertical axis, or y-axis - Answer✔Runs up and down
Unrelated - Answer✔Two items that are not associated
Related or Proportional - Answer✔Two items that are associated or affiliated
However, the relationship between the items does not have to be specified
Directly related or Directly proportional - Answer✔Two items that are associated such that
when one item increases, the other increases
Inversely related or inversely proportional - Answer✔Two items are associated such that when
one item increases, the other decreases
Reciprocal Relationship - Answer✔When two numbers with a reciprocal relationship are
multiplied together, the result is one
Reciprocal numbers are inverse because when one increases, the other decreases
For a numerical answer to a question to be comprehensive, it requires a - Answer✔Unit
"Increase by a factor" means - Answer✔To multiply by that number
"Decrease by a factor" means - Answer✔To divide by that number
Scientific or engineering notation is a shorthand manner to represent what types of numbers? -
Answer✔Very large or very small numbers
A number in scientific notation form with a positive exponent has a value - Answer✔Greater
than 10
A number in scientific notation form with an exponent of zero has a value - Answer✔Between 1
and 10
A number in scientific notation form with a negative exponent has a value - Answer✔Less than
1
1
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
10⌃9 - Answer✔Prefix: giga
Symbol: G
Meaning: billion
10⌃6 - Answer✔Prefix: mega
Symbol: M
Meaning: million
10⌃3 - Answer✔Prefix: kilo
Symbol: k
Meaning: thousand
10⌃2 - Answer✔Prefix: hecto
Symbol: h
Meaning: hundred
10⌃1 - Answer✔Prefix: deca
Symbol: da
Meaning: ten
10⌃-1 - Answer✔Prefix: deci
Symbol: d
Meaning: tenth
10⌃-2 - Answer✔Prefix: centi
Symbol: c
Meaning: hundredth
10⌃-3 - Answer✔Prefix: milli
Symbol: m
Meaning: thousandth
10^-6 - Answer✔Prefix: micro
Symbol: μ
Meaning: millionth
10^-9 - Answer✔Prefix: nano
2
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
Symbol: n
Meaning: billionth
List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci - Answer✔micro, milli, deci, deca, hecto, mega
List all these metric terms in decreasing order:
A. nano
B. canti
C. giga
D. kilo
E. hecto
F. micro - Answer✔giga, kilo,hecto, centi, micro, nano
Sound pulses travel through biologic tissue, or ______. - Answer✔Media
All waves carry _____ from one location to another. - Answer✔Energy
Sound is a __________ wave in which particles in the medium move. - Answer✔Mechanical
Sound cannot travel through a ______; it must travel through a ______. - Answer✔Vacuum,
medium
What does compressed mean? - Answer✔Squeezed together
What does rarefied mean? - Answer✔Stretched apart
Sound travels in a ________ line. - Answer✔Straight
Sound waves are ____________ waves. - Answer✔Longitudinal
What is the propagation speed dependent on? - Answer✔The medium
Are there any biologic effects on tissue? - Answer✔No
Sound waves are identified by - Answer✔Oscillations in acoustic variables
3
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
What are the three acoustic variables? (With their units) - Answer✔pressure - pascals (Pa),
density - kg/cm^3, distance - cm, mm
If something other than pressure, density, or distance (particle motion) rhythmically oscillates
in a wave, then the wave... - Answer✔Is not a sound wave
Sound waves are also known as - Answer✔Acoustic waves
What are the seven Acoustic Parameters? - Answer✔Period, frequency, amplitude, power,
intensity, wavelength, propagation speed
Particles move in a direction that is perpendicular to the direction that the wave propagates in
what wave? - Answer✔Transverse wave
Particles move in the same direction that the wave propagates in a ____________ wave. -
Answer✔Longitudinal
When are a pair of waves considered in-phase? - Answer✔When their peaks and troughs occur
at the same time and at the same location
Considered "in step"
What happens when two waves are out-of-phase? - Answer✔Their peaks occur at different
times, and so do their troughs
"out of step"
What is interference? - Answer✔When more than one beam travels in a medium and arrive at
the same location at exactly the same time
These waves lose their individual characteristics and combine to form a single wave
The interference of in-phase waves results in a single wave of _________ amplitude. This is
called ___________. - Answer✔Greater, constructive interference
(Larger Wave)
The interference of a pair of out-of-phase waves results in the formation of a single wave of
_____ amplitude. This combination is called _____________________. - Answer✔Lesser,
destructive interference
(Smaller Wave)
When frequencies of waves differ, what kind of wave occurs? - Answer✔Both constructive and
destructive interference
What do waves transfer from one location to another? - Answer✔Energy
Two waves are traveling in a medium and arrive at a location at the same time. What event
takes place? - Answer✔Interference
4
ARDMS- SPI Exam Questions And Answers
2025 Update.
The horizontal axis, or x-axis - Answer✔Runs side to side
The vertical axis, or y-axis - Answer✔Runs up and down
Unrelated - Answer✔Two items that are not associated
Related or Proportional - Answer✔Two items that are associated or affiliated
However, the relationship between the items does not have to be specified
Directly related or Directly proportional - Answer✔Two items that are associated such that
when one item increases, the other increases
Inversely related or inversely proportional - Answer✔Two items are associated such that when
one item increases, the other decreases
Reciprocal Relationship - Answer✔When two numbers with a reciprocal relationship are
multiplied together, the result is one
Reciprocal numbers are inverse because when one increases, the other decreases
For a numerical answer to a question to be comprehensive, it requires a - Answer✔Unit
"Increase by a factor" means - Answer✔To multiply by that number
"Decrease by a factor" means - Answer✔To divide by that number
Scientific or engineering notation is a shorthand manner to represent what types of numbers? -
Answer✔Very large or very small numbers
A number in scientific notation form with a positive exponent has a value - Answer✔Greater
than 10
A number in scientific notation form with an exponent of zero has a value - Answer✔Between 1
and 10
A number in scientific notation form with a negative exponent has a value - Answer✔Less than
1
1
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
10⌃9 - Answer✔Prefix: giga
Symbol: G
Meaning: billion
10⌃6 - Answer✔Prefix: mega
Symbol: M
Meaning: million
10⌃3 - Answer✔Prefix: kilo
Symbol: k
Meaning: thousand
10⌃2 - Answer✔Prefix: hecto
Symbol: h
Meaning: hundred
10⌃1 - Answer✔Prefix: deca
Symbol: da
Meaning: ten
10⌃-1 - Answer✔Prefix: deci
Symbol: d
Meaning: tenth
10⌃-2 - Answer✔Prefix: centi
Symbol: c
Meaning: hundredth
10⌃-3 - Answer✔Prefix: milli
Symbol: m
Meaning: thousandth
10^-6 - Answer✔Prefix: micro
Symbol: μ
Meaning: millionth
10^-9 - Answer✔Prefix: nano
2
,©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
Symbol: n
Meaning: billionth
List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci - Answer✔micro, milli, deci, deca, hecto, mega
List all these metric terms in decreasing order:
A. nano
B. canti
C. giga
D. kilo
E. hecto
F. micro - Answer✔giga, kilo,hecto, centi, micro, nano
Sound pulses travel through biologic tissue, or ______. - Answer✔Media
All waves carry _____ from one location to another. - Answer✔Energy
Sound is a __________ wave in which particles in the medium move. - Answer✔Mechanical
Sound cannot travel through a ______; it must travel through a ______. - Answer✔Vacuum,
medium
What does compressed mean? - Answer✔Squeezed together
What does rarefied mean? - Answer✔Stretched apart
Sound travels in a ________ line. - Answer✔Straight
Sound waves are ____________ waves. - Answer✔Longitudinal
What is the propagation speed dependent on? - Answer✔The medium
Are there any biologic effects on tissue? - Answer✔No
Sound waves are identified by - Answer✔Oscillations in acoustic variables
3
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
What are the three acoustic variables? (With their units) - Answer✔pressure - pascals (Pa),
density - kg/cm^3, distance - cm, mm
If something other than pressure, density, or distance (particle motion) rhythmically oscillates
in a wave, then the wave... - Answer✔Is not a sound wave
Sound waves are also known as - Answer✔Acoustic waves
What are the seven Acoustic Parameters? - Answer✔Period, frequency, amplitude, power,
intensity, wavelength, propagation speed
Particles move in a direction that is perpendicular to the direction that the wave propagates in
what wave? - Answer✔Transverse wave
Particles move in the same direction that the wave propagates in a ____________ wave. -
Answer✔Longitudinal
When are a pair of waves considered in-phase? - Answer✔When their peaks and troughs occur
at the same time and at the same location
Considered "in step"
What happens when two waves are out-of-phase? - Answer✔Their peaks occur at different
times, and so do their troughs
"out of step"
What is interference? - Answer✔When more than one beam travels in a medium and arrive at
the same location at exactly the same time
These waves lose their individual characteristics and combine to form a single wave
The interference of in-phase waves results in a single wave of _________ amplitude. This is
called ___________. - Answer✔Greater, constructive interference
(Larger Wave)
The interference of a pair of out-of-phase waves results in the formation of a single wave of
_____ amplitude. This combination is called _____________________. - Answer✔Lesser,
destructive interference
(Smaller Wave)
When frequencies of waves differ, what kind of wave occurs? - Answer✔Both constructive and
destructive interference
What do waves transfer from one location to another? - Answer✔Energy
Two waves are traveling in a medium and arrive at a location at the same time. What event
takes place? - Answer✔Interference
4
