Ultrasound may be used for medical purposes to see babies in the womb or to break up kidney stones. The uses depend on the frequencies used and how they are focused. How do ultrasounds compare to sounds a human can hear?
A. Ultrasound sounds are actually not sounds but are forms of radiation.
B. Ultrasounds are very high frequency sounds humans cannot hear.
C. Ultrasound waves are too large to travel into the inner ear.
D. Ultrasound waves travel as transverse waves instead of compression waves.
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