Midterm Review (ch 1-12 Ultrasound Physics)
Midterm Review (ch 1-12 Ultrasound Physics) Exam Questions Containing 277
terms with Solutions/ Already Graded A+ 2024. Unrelated - Answer: Two items that are not associated
Directly related - Answer: Two items that are associated; when one increases, so does the other. Midterm Review (ch 1-12 Ultrasound Physics)
Units of length/distance - Answer: Cm, ft
Units of area - Answer: Cm squared; ft squared
Units of volume - Answer: Cm (cubed), ft (cubed)
What is the reciprocal of 100? - Answer: 1/100 OR 0.01
What is media? - Answer: Biological tissue
Compressed? - Answer: Squeezed together
Rarefied? - Answer: Stretched apart
Sound waves are what type of wave? - Answer: Longitudinal and acoustic
Transverse waves? - Answer: Particles that move perpendicular to the direction that the wave propagates.
Longitudinal waves? - Answer: Particles that move in the same direction that the wave propagates.
When can you call a wave a sound wave? - Answer: 1. It is a mechanical wave,
2. It is longitudinal
3. One of the acoustic variables should be in rhythmic oscillation. Midterm Review (ch 1-12 Ultrasound Physics)
Acoustic propagation properties? - Answer: The effects of medium upon the sound wave.
Biological effects? - Answer: The effects of the sound wave upon the biological tissue through which it passes.
What is ultrasound? - Answer: Inaudible sound over 20,000 Hz.
Three acoustic variables? - Answer: Pressure, density, and distance
Pressure unit? - Answer: Pascals
Density units? - Answer: Kg/cm (cubed)
In-phase? - Answer: When a pair of waves peaks occur at the same time and location.
Out-of-phase? - Answer: When a pair of waves peaks occur at different times.
Interference? - Answer: When multiple beams arrive at the same location and lose their individual characteristics to form one single wave.
Constructive interference? - Answer: When a pair of in-phase waves result in the formation of a single wave of greater amplitude than either of its components. Midterm Review (ch 1-12 Ultrasound Physics)
Destructive Interference? - Answer: When a pair of out-of-phase waves results in the formation of a single wave of lesser amplitude than at least of one its components.
Two waves are traveling in a medium and arrive at a location at the same time. What event takes place? - Answer: Interference.
Period? - Answer: The time it takes a wave to complete one cycle.
Period units? - Answer: Microseconds.
Period is determined by? - Answer: Sound source only.
Frequency? - Answer: The number of particular events that occur in a specific duration of time.
Frequency units? - Answer: Per second (Hz)
Frequency is determined by? - Answer: Sound source only.
Is period adjustable? - Answer: No
Is frequency adjustable? - Answer: No.
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