Exam-style question
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What happens to ultrasound waves when they pass from a medium of low acoustic impedance to one of high acoustic impedance?.
- A.Most of the wave is transmitted.
- B.Most of the wave is reflected.
- C.There is no change in wave behavior.
- D.The wave speed increases.
Model answer
What a good answer should say
- Most of the wave is reflected.
Explanation
Why this works
When ultrasound waves transition from a medium with low acoustic impedance to one with high acoustic impedance, a significant portion of the wave is reflected back due to the impedance mismatch. This reflection is crucial for generating images in ultrasound diagnostics.
Common mistake
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