Phys 1.2 - Ultrasound 3.0 / 5 based on 2 ratings ? PhysicsWaves and SoundGCSEAQA Created by: DanCreated on: 30-04-13 18:01 What frequency can a human ear detect? 20Hz to 20,000Hz 1 of 8 What are soundwaves of a higher frequency called? Ultrasound waves 2 of 8 When a wave meets a boundary between 2 different materials what happens? Part of the wave is reflected 3 of 8 How can this be used to tell how far away a material is? The wave travels back to a detector, the time taken for the wave to travel to and from the detector can determine the distance 4 of 8 What equation can be used to work this out? (Symbol) S = V x T 5 of 8 Word equation Distance = Speed X Time 6 of 8 Is ultrasound ionising? No 7 of 8 How can ultrasound be used in medicine? Can shatter kidney stones, give pictures of unborn babys 8 of 8
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