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Ultrasound Physics SPI exam Questions + Answers Graded A+ €7,84
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Ultrasound Physics SPI exam Questions + Answers Graded A+
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a transverse wave has particles that move in a - ️️perpendicular direction (right angles or 90 degrees) to the wave direction acoustic variables identify which waves are sound waves, when an acoustic variable changes in time a - ️️sound wave is present length is measured in - ️️cm, ...

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  • 29 oktober 2024
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Ultrasound Physics SPI exam
a transverse wave has particles that move in a - ✔️✔️perpendicular direction (right
angles or 90 degrees) to the wave direction

acoustic variables identify which waves are sound waves, when an acoustic variable
changes in time a - ✔️✔️sound wave is present

length is measured in - ✔️✔️cm, feet

area is measured in - ✔️✔️cm^2, feet^2

volume is measured in - ✔️✔️cm^3, feet^3

percent is not - ✔️✔️a unit

increase by a factor means - ✔️✔️to multiply

decrease by a factor means - ✔️✔️to divide

how many hertz is 3 MHZ - ✔️✔️3,000,000

how much bigger is a billion than a million - ✔️✔️1000 times

how many milliliters are contained in a jar filled with 5 liters of fluid - ✔️✔️5000

how many liters are in 80 ml of fluid - ✔️✔️0.080

macro means - ✔️✔️bigger

micro means - ✔️✔️smaller

the effects of the medium upon the sound wave - ✔️✔️acoustic propagation properties

the effects of the sound wave upon the biologic tissue - ✔️✔️biologic effects

a type of wave that carries energy not matter from place to place - ✔️✔️sound

areas of increased pressure and density - ✔️✔️compressions

areas of decreased pressure and density - ✔️✔️rarefractions

,sound must travel through a medium, sound cannot travel through a - ✔️✔️vacuum

sound is a - ✔️✔️mechanical, longitudinal wave

sound travels in a - ✔️✔️straight line


three acoustic variables are - ✔️✔️pressure, density, and distance

pressure is - ✔️✔️a concentration of force within an area

pressure is found by - ✔️✔️force/area

unit of pressure is - ✔️✔️pascals (Pa)

density is - ✔️✔️concentration of mass within a volume

unit of density is - ✔️✔️kg/cm^3

distance is - ✔️✔️measure of particle motion

unit of distance - ✔️✔️mm or cm

unit of density - ✔️✔️kg/cm^3


a longitudinal wave has particles move back and forth in the - ✔️✔️same direction as
the wave

acoustic variables - ✔️✔️identify which waves are sound waves

acoustic parameters - ✔️✔️describe the features of a particular sound wave

period is measured in - ✔️✔️units of time (microsec)

the time required to complete a single cycle
example would be -high school class is 50 minutes - ✔️✔️period

period is determined by the - ✔️✔️sound source

Can period be changed by the sonographer? - ✔️✔️No, cannot be changed by
sonographer

, frequency is - ✔️✔️the number of certain events that occur in a particular time duration


units of frequency - ✔️✔️per second, 1/second, hertz, Hz

hertz is another way of saying - ✔️✔️per second

Frequency is determined by the - ✔️✔️sound source

Can frequency be changed by the sonographer? - ✔️✔️No, cannot be changed by
sonographer

typical frequency values include - ✔️✔️2 MHz to 15 MHz

humans can hear frequency's - ✔️✔️between 20 Hz and 20,000 Hz

ultrasound can hear frequency's - ✔️✔️greater than 20,000 Hz (too high for humans to
hear)

infrasound is - ✔️✔️less than 20 Hz (below human and ultrasound)

period and frequency are - ✔️✔️reciprocals and an inverse relationship

when period increases - ✔️✔️frequency decreases

When period decreases - ✔️✔️frequency increases

when period is unchanged - ✔️✔️frequency is also unchanged

when dealing with frequency and period remember to use units of - ✔️✔️sec & Hz

three bigness parameters - ✔️✔️amplitude, power, intensity

amplitude, power, and intensity describes a sound beams - ✔️✔️strength

amplitude, power, and intensity can all be changed by the sonographer and -
✔️✔️decreases as sound travels

amplitude, power, and intensity are initially determined by - ✔️✔️the sound source

amplitude is - ✔️✔️the difference between the average value and the maximum value
of an acoustic variable. The variation of an acoustic variable.

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