Physics revision 0.0 / 5 ? PhysicsALL CORE PHYSICSGCSEAQA Created by: isobel2001Created on: 29-04-15 17:38 What is frequency? Number of waves that pass a fixed place in a given amount of time. 1 of 25 What is wave length? The distance between successive crests of a wave. 2 of 25 In the visible spectrum, what are violet wavelength and frequency like? Short wavelength, high frequency. 3 of 25 What are red wavelength and frequency like? Long wavelength, low frequency. 4 of 25 If something is moving away from you it is called... Red shift. 5 of 25 If something is moving towards you it is called... Blue shift. 6 of 25 The further shifted something is... The faster it is moving. 7 of 25 The shorter the wavelength... The higher the pitch and frequency. 8 of 25 The longer the wavelength... The lower the pitch and frequency. 9 of 25 What is a longitudinal wave? A wave vibrating in the direction of propagation. 10 of 25 What is a transverse wave? A wave vibrating at right angles to the direction of it's propagation. 11 of 25 What is amplitude? The maximum extent of a vibration or oscillation. 12 of 25 Wavespeed equals... m/s 13 of 25 Frequency equals... Hz 14 of 25 Wavelength equals... m 15 of 25 Frequency x wavelength equals... wavespeed. 16 of 25 Wavespeed / wavelength equals... frequency. 17 of 25 wavespeed / frequency equals... wavelength. 18 of 25 What is the law of reflection? The angle of incidence is equal to the angle of reflection. 19 of 25 What is diffraction? Diffraction involves a change in direction of waves as they pass through an opening or around a barrier in their path. 20 of 25 What happens when plane waves arrive at the gap? The ends curve to fit through. 21 of 25 When does most diffraction happen? When the gap is the same size as the wavelength. 22 of 25 What is the amount of motion in particles proportional to? Temperature. Increased temperature means increased motion. 23 of 25 What are light and shiny objects good at? Emitting and reflecting radiation. 24 of 25 What are dark and matt objects good at? Absorbing radiation. 25 of 25
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