Ultrasound 0.0 / 5 ? PhysicsWavesGCSEEdexcel Created by: Tiakaye99Created on: 01-07-18 18:16 Can ultrasound travel through a vacuum? No 1 of 12 What frequency does ultrasound have? 20,000 hz 2 of 12 Can humans hear ultrasound? No 3 of 12 What type of wave is ultrasound? Longitudinal 4 of 12 What is are compressions? Regions of higher pressure 5 of 12 What are rarefactions? Regions of low pressure 6 of 12 What happens to the wavelength when there is a higher frequency or pitch? It gets smaller 7 of 12 How can ultrasound help kidney stones? They break down kidney stones into smaller pieces 8 of 12 Does ultrasound damage cells? No 9 of 12 What is a use of ultrasound to do with soft tissue? It is able to produce images of soft tissue 10 of 12 Why is ultrasound preferred to X-rays? Ultrasound can build up an image of the internal structure 11 of 12 What happens to ultrasound at each boundary in a body? Some are reflected and the rest are transmitted 12 of 12
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