P3 Part 1 Revision 0.0 / 5 ? PhysicsGCSEAQA Created by: Ahlam BakarCreated on: 01-03-13 01:56 What medical equipment is part of the electromagnetic spectrum? x rays 1 of 10 What type of waves can be reflected, refracted and diffracted? transverse waves 2 of 10 How do you measure ultrasound? speed distance time 3 of 10 Sound is a...? longitudinal wave 4 of 10 Ultrasound having a short wavelength allows it to be focussed into a...? narrow beam 5 of 10 What causes some ultrasound waves to be reflected back? change in density 6 of 10 The greater the difference in density the -------- the reflection. stronger 7 of 10 Distance travelled = speed of sound through materials x ---- -----? time taken 8 of 10 One word that means the bending of light. refraction 9 of 10 Sine of the angle of incidence divided by the sine of the angle of refraction gives you what? refractive index 10 of 10
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