Exam (elaborations)
2024 PHYSICS (DISTANCE, TIME, WAVE AND FREQUENCY) UNIT 1 EXAM WITH CORRECT ANSWERS
- Course
- Institution
2024 PHYSICS (DISTANCE, TIME, WAVE AND FREQUENCY) UNIT 1 EXAM WITH CORRECT ANSWERS
[Show more]
Content preview
2024 PHYSICS (DISTANCE, TIME,WAVE AND FREQUENCY) UNIT 1
EXAM WITH CORRECT ANSWERS
The ARDMS SPI exam includes ______ multiple choice questions - CORRECT-
ANSWERS110
A science that deals with matter and energy and their actions is called. -
CORRECT-ANSWERSPhysics
How ultrasound works and how ultrasound interacts with its medium is called
- CORRECT-ANSWERSUltrasound physics
For most materials, as ____ increases, the ____ increases much faster. This
non-linear relationship results in more dense materials typically having much
higher propagation velocities - CORRECT-ANSWERSdensity; stiffness
A ____ is a device that converts energy from one form into another, in
ultrasound this process uses _____ _____ to convert energy pulses to sound -
CORRECT-ANSWERStransducer, piezoelectric crystals
The ____ and _____ of the electrical pulse cross the crystals and determine
the ____ and _____ of the wave going into tissues - CORRECT-
ANSWERSamplitude; power; amplitude, power
When referring to ____ in ultrasound, the term is being used in reference to
transmit voltage which drives the transducer crystal elements - CORRECT-
ANSWERSamplitude
Amplitude is comparable to _____, it is considered a _____ of an acoustic
variable or of voltage - CORRECT-ANSWERSloudness; magnitude
Amplitude is formally defined as the max variation of a variable from it's
mean value, the formula for this equation can be written as - CORRECT-
ANSWERSmax-mean
mean-min
max-min/2
____ increases the amplitude of returning echos, _____ are fine tuning this
process - CORRECT-ANSWERSGain, TGC
, In terms of sound, _____ corresponds to volume and ____ corresponds to pitch
- CORRECT-ANSWERSamplitude, frequency
Amplitude is initially determined by the ___ ____, but changes based on
characteristics of the sound wave and medium; amplitude can/cannot be
adjusted by the sonographer - CORRECT-ANSWERSsound source, can (so is
power)
_____ is a measure of how much work or energy is expended over time, it
represents the total energy in a ____ and is measured in _____ - CORRECT-
ANSWERSpower, beam, watts
Power is proportional to _______ squared and directly proportional to _____ -
CORRECT-ANSWERSamplitude; intensity
Intensity is synonymous with _______ of sound and is calculated by -
CORRECT-ANSWERSloudness; power/area
Intensity is adjusted by the sonographer through which ultrasound control -
CORRECT-ANSWERSfocus (mostly), but also through power and amplitude
A ______ is a number that produces a value of 1 when multiplied (1/x by x/1) -
CORRECT-ANSWERSreciprocal
Common display modes available in sonography are (5) - CORRECT-
ANSWERSB-mode
M-mode
A-mode
color doppler
spectral doppler
In sonography graphing - The horizontal axis usually represents ____and the
vertical axis represents ____ or ______ - CORRECT-ANSWERStime; strength;
speed
_____ _____ is using powers of 10 to simplify large and small numbers -
CORRECT-ANSWERSscientific notation
mega (M) represents - CORRECT-ANSWERS1,000,000 or 10^6
kilo (k) represents - CORRECT-ANSWERS1,000 or 10^3
centi (c) represents - CORRECT-ANSWERS0.01 or 10^-2
milli (m) represents - CORRECT-ANSWERS0.001 or 10^-3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Elitaa. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now