ARDMS- SPI EXAM | QUESTIONS & ANSWERS |
ALREADY GRADED A+ | UPDATED 2024
The horizontal axis, or x-axis
Runs side to side
The vertical axis, or y-axis
Runs up and down
Unrelated
Two items that are not associated
Related or Proportional
Two items that are associated or affiliated
However, the relationship between the items does not have to be specified
Directly related or Directly proportional
Two items that are associated such that when one item increases, the other increases
Inversely related or inversely proportional
Two items are associated such that when one item increases, the other decreases
Reciprocal Relationship
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
Unit
"Increase by a factor" means
To multiply by that number
"Decrease by a factor" means
To divide by that number
Scientific or engineering notation is a shorthand manner to represent what types of numbers?
Very large or very small numbers
A number in scientific notation form with a positive exponent has a value
Greater than 10
A number in scientific notation form with an exponent of zero has a value
Between 1 and 10
,A number in scientific notation form with a negative exponent has a value
Less than 1
10⌃9
Prefix: giga
Symbol: G
Meaning: billion
10⌃6
Prefix: mega
Symbol: M
Meaning: million
10⌃3
Prefix: kilo
Symbol: k
Meaning: thousand
10⌃2
Prefix: hecto
Symbol: h
Meaning: hundred
10⌃1
Prefix: deca
Symbol: da
Meaning: ten
10⌃-1
Prefix: deci
Symbol: d
Meaning: tenth
10⌃-2
Prefix: centi
Symbol: c
Meaning: hundredth
10⌃-3
Prefix: milli
Symbol: m
Meaning: thousandth
10^-6
Prefix: micro
Symbol: μ
Meaning: millionth
,10^-9
Prefix: nano
Symbol: n
Meaning: billionth
List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci
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
giga, kilo,hecto, centi, micro, nano
Sound pulses travel through biologic tissue, or ______.
Media
All waves carry _____ from one location to another.
Energy
Sound is a __________ wave in which particles in the medium move.
Mechanical
Sound cannot travel through a ______; it must travel through a ______.
Vacuum, medium
What does compressed mean?
Squeezed together
What does rarefied mean?
Stretched apart
Sound travels in a ________ line.
Straight
Sound waves are ____________ waves.
Longitudinal
, What is the propagation speed dependent on?
The medium
Are there any biologic effects on tissue?
No
Sound waves are identified by
Oscillations in acoustic variables
What are the three acoustic variables? (With their units)
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...
Is not a sound wave
Sound waves are also known as
Acoustic waves
What are the seven Acoustic Parameters?
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?
Transverse wave
Particles move in the same direction that the wave propagates in a ____________ wave.
Longitudinal
When are a pair of waves considered in-phase?
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?
Their peaks occur at different times, and so do their troughs
"out of step"
What is interference?
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
ALREADY GRADED A+ | UPDATED 2024
The horizontal axis, or x-axis
Runs side to side
The vertical axis, or y-axis
Runs up and down
Unrelated
Two items that are not associated
Related or Proportional
Two items that are associated or affiliated
However, the relationship between the items does not have to be specified
Directly related or Directly proportional
Two items that are associated such that when one item increases, the other increases
Inversely related or inversely proportional
Two items are associated such that when one item increases, the other decreases
Reciprocal Relationship
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
Unit
"Increase by a factor" means
To multiply by that number
"Decrease by a factor" means
To divide by that number
Scientific or engineering notation is a shorthand manner to represent what types of numbers?
Very large or very small numbers
A number in scientific notation form with a positive exponent has a value
Greater than 10
A number in scientific notation form with an exponent of zero has a value
Between 1 and 10
,A number in scientific notation form with a negative exponent has a value
Less than 1
10⌃9
Prefix: giga
Symbol: G
Meaning: billion
10⌃6
Prefix: mega
Symbol: M
Meaning: million
10⌃3
Prefix: kilo
Symbol: k
Meaning: thousand
10⌃2
Prefix: hecto
Symbol: h
Meaning: hundred
10⌃1
Prefix: deca
Symbol: da
Meaning: ten
10⌃-1
Prefix: deci
Symbol: d
Meaning: tenth
10⌃-2
Prefix: centi
Symbol: c
Meaning: hundredth
10⌃-3
Prefix: milli
Symbol: m
Meaning: thousandth
10^-6
Prefix: micro
Symbol: μ
Meaning: millionth
,10^-9
Prefix: nano
Symbol: n
Meaning: billionth
List all these metric terms in increasing order:
A. mega
B. micro
C. milli
D. hecto
E. deca
F. deci
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
giga, kilo,hecto, centi, micro, nano
Sound pulses travel through biologic tissue, or ______.
Media
All waves carry _____ from one location to another.
Energy
Sound is a __________ wave in which particles in the medium move.
Mechanical
Sound cannot travel through a ______; it must travel through a ______.
Vacuum, medium
What does compressed mean?
Squeezed together
What does rarefied mean?
Stretched apart
Sound travels in a ________ line.
Straight
Sound waves are ____________ waves.
Longitudinal
, What is the propagation speed dependent on?
The medium
Are there any biologic effects on tissue?
No
Sound waves are identified by
Oscillations in acoustic variables
What are the three acoustic variables? (With their units)
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...
Is not a sound wave
Sound waves are also known as
Acoustic waves
What are the seven Acoustic Parameters?
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?
Transverse wave
Particles move in the same direction that the wave propagates in a ____________ wave.
Longitudinal
When are a pair of waves considered in-phase?
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?
Their peaks occur at different times, and so do their troughs
"out of step"
What is interference?
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
