Edelman SPI - Ultrasound Physics !| !| !| !| !|
Exam with accurate detailed !| !| !| !|
solutions
3 rules for powers of 10s - ✔✔positive exponents are >10
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negative exponents are <10!| !| !|
0 exponent has a value between 1 and 10
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what is the prefix, symbol and value for an exponent of 10^6 -
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✔✔mega, M, 1,000,000 !| !|
what is the prefix, symbol and value for an exponent of 10^3 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔kilo, k, 1,000!| !|
what is the value for an exponent of 10^0 - ✔✔1
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what is the prefix, symbol and value for an exponent of 10^-1 -
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✔✔deci, d, 1/10 !| !|
what is the prefix, symbol, and value for an exponent of 10^-2 -
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✔✔centi, c, 1/100 !| !|
what is the prefix, symbol, and value for an exponent of 10^-3 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔milli, m, 1/1000 !| !|
,what is the prefix, symbol and value for an exponent of 10^-6 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔micro, u, 1/1000000 !| !|
All waves carry _______ from one location to another. - ✔✔energy
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Sound is a __________ wave in which particles in the medium
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move. - ✔✔mechanical !| !|
Can sound travel through a vacuum? - ✔✔No. Sound must
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travel through matter and there is no matter in vacuums.
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there are areas of ______ and ______ in a sound wave -
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✔✔compression, rarefraction !|
in what way does sound travel? - ✔✔in a straight line
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Sound waves are _____ waves. - ✔✔longitudinal
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Acoustic propagation properties are? - ✔✔the effects of the
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medium upon the sound wave !| !| !| !|
Acoustic variables - ✔✔changes that occur within a medium as
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a result of sound traveling through that medium
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What are the 3 acoustic variables? - ✔✔Pressure (P), density (ρ),
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and distance (particle vibration)
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,what is the acoustic variable pressure ? - ✔✔concentration of
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force in an area !| !| !| !|
units: pascals (Pa) !| !|
what is the acoustic variable density? - ✔✔concentration of mass
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in a volume
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units: kg/cm^3 !|
what is the acoustic variable distance? - ✔✔measure of particle
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motion !|
units: cm, feet, mile !| !| !|
what does one of the acoustic variables have to do in order to
!| !| !| !| !| !| !| !| !| !| !| !| !|
be a sound wave? - ✔✔rhythmically oscillate
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sound waves are also known as ____ waves - ✔✔acoustic
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What are the 7 acoustic parameters? - ✔✔1. Period
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2. Frequency
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3. Amplitude
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4. Power
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5. Intensity
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6. Wavelength
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7. Propagation speed
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, How do particles move in a transverse waves? -
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✔✔perpendicular to the wave propagation !| !| !| !| !|
(ex: hold end of string and shake up and down)
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how do particles move in longitudinal waves? - ✔✔in the same
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direction that the wave propagates. !| !| !| !| !|
sound is a longitudinal wave.
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what are considered in-phase waves? - ✔✔a pair of waves that
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have their peaks at the same time and same location
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what are considered out-of-phase waves? - ✔✔a pair of waves
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that have their peaks at different points and at different times
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what kind of interference occurs with in-phase waves? -
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✔✔constructive interference !|
what kind of interference occurs with out-phase waves? -
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✔✔destructive interference !|
what is interference (for sound)? - ✔✔when more than one
!| !| !| !| !| !| !| !| !| !|
sound beam travel in a medium and can arrive at the same
!| !| !| !| !| !| !| !| !| !| !| !|
place at the same time. the waves then loose their individual
!| !| !| !| !| !| !| !| !| !| !|
characteristics and combine to form a single wave. !| !| !| !| !| !| !|
Exam with accurate detailed !| !| !| !|
solutions
3 rules for powers of 10s - ✔✔positive exponents are >10
!| !| !| !| !| !| !| !| !| !|
negative exponents are <10!| !| !|
0 exponent has a value between 1 and 10
!| !| !| !| !| !| !| !|
what is the prefix, symbol and value for an exponent of 10^6 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔mega, M, 1,000,000 !| !|
what is the prefix, symbol and value for an exponent of 10^3 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔kilo, k, 1,000!| !|
what is the value for an exponent of 10^0 - ✔✔1
!| !| !| !| !| !| !| !| !| !|
what is the prefix, symbol and value for an exponent of 10^-1 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔deci, d, 1/10 !| !|
what is the prefix, symbol, and value for an exponent of 10^-2 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔centi, c, 1/100 !| !|
what is the prefix, symbol, and value for an exponent of 10^-3 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔milli, m, 1/1000 !| !|
,what is the prefix, symbol and value for an exponent of 10^-6 -
!| !| !| !| !| !| !| !| !| !| !| !| !|
✔✔micro, u, 1/1000000 !| !|
All waves carry _______ from one location to another. - ✔✔energy
!| !| !| !| !| !| !| !| !| !|
Sound is a __________ wave in which particles in the medium
!| !| !| !| !| !| !| !| !| !| !|
move. - ✔✔mechanical !| !|
Can sound travel through a vacuum? - ✔✔No. Sound must
!| !| !| !| !| !| !| !| !| !|
travel through matter and there is no matter in vacuums.
!| !| !| !| !| !| !| !| !|
there are areas of ______ and ______ in a sound wave -
!| !| !| !| !| !| !| !| !| !| !| !|
✔✔compression, rarefraction !|
in what way does sound travel? - ✔✔in a straight line
!| !| !| !| !| !| !| !| !| !|
Sound waves are _____ waves. - ✔✔longitudinal
!| !| !| !| !| !|
Acoustic propagation properties are? - ✔✔the effects of the
!| !| !| !| !| !| !| !| !|
medium upon the sound wave !| !| !| !|
Acoustic variables - ✔✔changes that occur within a medium as
!| !| !| !| !| !| !| !| !| !|
a result of sound traveling through that medium
!| !| !| !| !| !| !|
What are the 3 acoustic variables? - ✔✔Pressure (P), density (ρ),
!| !| !| !| !| !| !| !| !| !| !|
and distance (particle vibration)
!| !| !|
,what is the acoustic variable pressure ? - ✔✔concentration of
!| !| !| !| !| !| !| !| !| !|
force in an area !| !| !| !|
units: pascals (Pa) !| !|
what is the acoustic variable density? - ✔✔concentration of mass
!| !| !| !| !| !| !| !| !|
in a volume
!| !| !| !|
units: kg/cm^3 !|
what is the acoustic variable distance? - ✔✔measure of particle
!| !| !| !| !| !| !| !| !| !|
motion !|
units: cm, feet, mile !| !| !|
what does one of the acoustic variables have to do in order to
!| !| !| !| !| !| !| !| !| !| !| !| !|
be a sound wave? - ✔✔rhythmically oscillate
!| !| !| !| !| !|
sound waves are also known as ____ waves - ✔✔acoustic
!| !| !| !| !| !| !| !| !|
What are the 7 acoustic parameters? - ✔✔1. Period
!| !| !| !| !| !| !| !|
2. Frequency
!|
3. Amplitude
!|
4. Power
!|
5. Intensity
!|
6. Wavelength
!|
7. Propagation speed
!| !|
, How do particles move in a transverse waves? -
!| !| !| !| !| !| !| !| !|
✔✔perpendicular to the wave propagation !| !| !| !| !|
(ex: hold end of string and shake up and down)
!| !| !| !| !| !| !| !| !|
how do particles move in longitudinal waves? - ✔✔in the same
!| !| !| !| !| !| !| !| !| !| !|
direction that the wave propagates. !| !| !| !| !|
sound is a longitudinal wave.
!| !| !| !|
what are considered in-phase waves? - ✔✔a pair of waves that
!| !| !| !| !| !| !| !| !| !| !|
have their peaks at the same time and same location
!| !| !| !| !| !| !| !| !|
what are considered out-of-phase waves? - ✔✔a pair of waves
!| !| !| !| !| !| !| !| !| !|
that have their peaks at different points and at different times
!| !| !| !| !| !| !| !| !| !|
what kind of interference occurs with in-phase waves? -
!| !| !| !| !| !| !| !| !|
✔✔constructive interference !|
what kind of interference occurs with out-phase waves? -
!| !| !| !| !| !| !| !| !|
✔✔destructive interference !|
what is interference (for sound)? - ✔✔when more than one
!| !| !| !| !| !| !| !| !| !|
sound beam travel in a medium and can arrive at the same
!| !| !| !| !| !| !| !| !| !| !| !|
place at the same time. the waves then loose their individual
!| !| !| !| !| !| !| !| !| !| !|
characteristics and combine to form a single wave. !| !| !| !| !| !| !|
