Ch 1. Ultrasound Physics Basics Flashcards
The horizontal axis of a graph that reports time.
X-axis
The vertical axis of a graph that reports velocity.
Y-axis
Two items are not associated with each other.
ex: hair color is _____ to shoe size.
Unrelated
Items that have an association , however the association does not have to be specified.
ex: Exam scores are ____ to studying
Related
Items that are associated, when one goes up the other does as well or when one goes down the other goes down as well.
Ex: the size of ones foot is ________ to their shoe size.
Directly related/ directly proportional
When one item increases, the other decreases.
Ex: As frequency of sound increases, the period will decrease.
Inversely related/ inversely proportional
When two items are multiplied together, their sum is equal to 1.
ex: Period and frequency are…
ex2: 5 and 1/5 are…
Reciprocal relationship
Properties assigned to numerical values to specify related measurements.
Units
Unit for time.
seconds (sec)
Unit for distance
cm, ft, in
unit for weight
oz, lbs, mg
True or false:
Percents are units
False
they are not and considered unitless
Units of length
mm or cm
Units of area
cm^2
Units of volume
cm^3
Converts large numbers to shorthand, easier to manage.
Ex: 10^-6 is 0.000001
10^3 is 10,000
Scientific notation
When the exponent is positive in a scientific notation, you move the decimal to the ….
Right
When the exponent is negative in a scientifc notation, you move the decimal to the…
Left
What is the symbol for giga
G
What is the meaning for giga (G)?
Billion
What is the prefix for this exponent:
10^9
giga
What is the symbol for Mega?
M
What is the meaning for mega (M)?
Million
What is the prefix for this exponent:
10^6
mega
