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SONOGRAPHY CANADA PHYSICS CORE/245 questions and answers
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SONOGRAPHY CANADA PHYSICS CORE/245questions and answers
Quiz :what is media/medium - Answer :biological tissue
Quiz :what do all waves carry from one location to another - Answer :energy
Quiz :sound is a ____________ wave in which particles in the medium move -
Answer :mechanical
Quiz :where can sound not travel - Answer :in a vacuum
Quiz :are sound waves transverse or longitudinal waves - Answer :longitudinal
Quiz :the effects of the medium upon the sound wave - Answer :acoustic
propagation properties
Quiz :what are used to distinguish between sound waves and other types of
waves - Answer :acoustic variables- pressure, density, and distance (measure
of a particle motion)
Quiz :what are the 3 acoustic variables - Answer :pressure, density and
distance
Quiz :concentration of force in an area - Answer :pressure
Quiz :what is pressure measured in - Answer :pascals (Pa)
Quiz :concentration of mass in a volume - Answer :density
Quiz :what is volume measured in - Answer :kg/cm^3 (cubic)
Quiz :what describes a sound waves features - Answer :acoustic parameters
Quiz :what are the 7 acoustic parameters - Answer :period, frequency,
amplitude, power, intensity, wavelength, propagation speed
Quiz :how do particles move in soundwaves - Answer :longitudinally- particles
move in the same direction that the wave propagates (parallel)
, Quiz :in-phase wave - Answer :when their peaks and troughs occur at the
same time
Quiz :out of phase wave - Answer :peaks and troughs occur at difference
times
-either inverted or out of step
Quiz :what occurs when waves lose their individual characteristics and
combine to form a single wave - Answer :interference
Quiz :what combination of waves results in the formation of a single wave of
greater amplitude of either components - Answer :constructive interference
Quiz :what kind of wave causes the formation of a single wave of lesser
amplitude causing what types of interference - Answer :out of phase
destructive interference
Quiz :what occures when 2 out of phase waves of equal amplitude interfere -
Answer :complete destructive interference
Quiz :what types of waves (phase) occur with complete destructive
interference - Answer :out of phase waves
Quiz :what causes waves to be momentarily in phase and out of phase
(causing constructive and destructive interference) - Answer :waves of
difference frequencies
Quiz :what type of waves of difference frequencies result in (type of
interference) - Answer :constructive and destructive
Quiz :what direction of the graph is verticle vs horozontal - Answer :y=vertical
x=horozonatal
Quiz :what is a reciprocal - Answer :when the 2 numbers are multiplied
together to = 1
(10 x 1/10)
Quiz :tracy gets made king huge dense dummy cause millions (of) micro
nuisances pileup - Answer :tera (10^12)
giga (10^9)
, mega (10^6)
kilo (10^3)
hecto (10^2)
deca (10^1)
deci (-1)
centi (-2)
milli (-3)
micro (-6)
nano (-9)
pico (-12)
Quiz :hertz to mega hertz - Answer :1 000 000 > 1
Quiz :what do parameters describe - Answer :the features of a sound wave. 7
parameters are required to ompletely characterize a sound wave
Quiz :which 2 parameters are reciprocals - Answer :period and frequency
Quiz :which parameters describe a waves bigness - Answer :amplitude,
power, intensity
Quiz :which parameter is determined by the sound source and the medium -
Answer :wavelength
Quiz :which parameters are determined by the sound source -
Answer :period, frequency, amplitude, power, and intensity
Quiz :which parameter is determined by the medium - Answer :speed
Quiz :what is the time it takes a wave to vibrate a single cycle or the time from
the start of one cycle to the start of the next cycle - Answer :period
Quiz :what units is the period reported in - Answer :time; microseconds,
seconds
Quiz :what are the typical values of period in diagnostic US - Answer :0.06-
0.5microseconds
0.00000006-0.0000005 (ms)
Quiz :what is period determined by - Answer :sound source only
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