Ultrasound 4.0 / 5 based on 1 rating ? PhysicsMedical applications of physicsGCSEAQA Created by: GeorgiaHaworthCreated on: 03-04-14 10:00 What frequency range of sound waves can the human ear hear? 20Hz to 20 000Hz 1 of 8 What are Ultrasound waves used for? Prenatal scans of a baby in the womb. 2 of 8 What happens to Ultrasound waves after a transducer has emitted pulses? It is partially reflected from the different tissue boundaries in its path and returns to the transducer to create an image on a screen. 3 of 8 What is an advantage of using Ultrasound waves instead of X-rays for medical scanning? Ultrasound waves are non-ionising and therefore harmless when used for scanning. 4 of 8 What can Ultrasound therapy be used for? To break painful kidney stones into little bits so the fragments are small enough to leave the kidneys naturally. 5 of 8 Why are Ultrasound waves not useful for examining lungs? Because they do not travel in air. 6 of 8 What, other than medical uses, do Ultrasound waves have? Detecting oil on the sea bed. 7 of 8 Why do Ultrasound scans reacquire gel? To ensure that there is no air between the ultrasound transducer and the patients skin. 8 of 8
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