ultrasound physics: quiz 1
Question 1
5 / 5 pts
What is the horizontal axis of a graph called
z-axis
x-axis
y-axis
t-axis
Question 2
5 / 5 pts
What are the units associated with length
cm, feet
cm2, feet2
cm3, feet3
all of the above are acceptable units for length
Question 3
5 / 5 pts
How much bigger is a million than a thousand
1,000
100
1,000,000
10
Question 4
5 / 5 pts
If converting a larger unit to a smaller unit, then ____________.
multiply
divide
subtract
add
Question 5
5 / 5 pts
How many hertz in 5 MHz
5
5,000
50,000
5,000,000
Question 6
5 / 5 pts
What is the meaning, prefix, and symbol of 109
millionth, micro, u
billionth, nano, n
billion, giga, G
million, mega, M
Question 7
5 / 5 pts
How many kilometers in 4000 meters
1/400
4000
400
4
Question 8
5 / 5 pts
What is the reciprocal of 1,000
100
1,000
0.001
1,000,000
Question 9
5 / 5 pts
Which is the reciprocal term to hecto
centi
kilo
milli
micro
Question 10
5 / 5 pts
What can an ellipse be used to measure
length
volume
area
distance
Question 11
5 / 5 pts
Term used to describe the effects of the sound wave as it passes through living tissue
toxic effects
biological effects
transmission properties
acoustic propagation properties
Question 12
5 / 5 pts
Which of the following is not an acoustic variable
pressure
particle motion
density
propagation speed
Incorrect
Question 13
0 / 5 pts
Which of the following describe sound waves
acoustic variables
acoustic biological effects
acoustic parameters
acoustic oscillations
Question 14
5 / 5 pts
What type of wave is a sound wave
longitudinal and mechanical
longitudinal and transverse
transverse and electrical
longitudinal and electrical
Question 15
5 / 5 pts
What occurs when a pair of waves are in phase
constructive interference
angular interaction
destructive interference
refraction
Question 16
5 / 5 pts
The combination of waves that exist at the same location and time is called
inference
rarefaction
interference
interaction
Question 17
5 / 5 pts
Define acoustic propagation property
effects of the sound wave upon the medium
effects of the medium upon the sound wave
effects of the medium upon propagation speed
effects of propagation speed upon the medium
Question 18
5 / 5 pts
Which of the following waves will exhibit constructive AND destructive interference
waves with different amplitudes
a pair of longitudinal waves
waves of different frequencies
out-of-phase waves
Question 19
5 / 5 pts
Which of the following is true of ALL waves
they travel through a medium
they carry energy from one place to another
their amplitudes do not change as they propagate
they travel in a straight line
Question 20
5 / 5 pts
Areas of increased pressure and density are
pressure variables
rarefactions
refractions
compressions