Unit 2 Test corrections UPhys PDF

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Brandi Parvin Ultrasound Physics Unit 2 Exam corrections

# 5 The temperature at which PZT is polarized is called the Curie temperature or Curie Point. I chose: False Why: I thought it was asking when it surpasses that, which would be depolarized. Correct answer: True

#9 This is an example of: I chose: angular Why: I didn’t know this answer. I should have looked at these more for the test. Correct Answer: lateral #16 Which of the following explains why a sound beam created by a disc-shaped crystal is hourglass shaped? I chose: Bernouslli’s principle Why: I thought I recognized the name and second guessed myself. I should have chosen C. Correct Answer: Huygen’s principle

#20 Attenuation in blood is ______ than soft tissue. I chose: Greater than Why: I wasn’t sure of this answer. I blanked out. Correct Answer: Less than...