Waves test:

• What type of wave transfers energy perpendicular to oscillation?


  Transverse.
• Which type of wave transfers energy parallel to oscillation? 


  Longitudinal.
• What do we call the distance between one point on a wave and the same point on the next wave? 


  Wavelength.
• What do we call the number of waves per second?

  Frequency.
• What do we call the time taken for 1 wave to pass a point?

  Time Period.
• What equation links wave speed, frequency and wavelength? 


  Wave speed = frequency x wavelength.
• What is the law of reflection?

  The angle of incidence must equal the angle of reflection.
• What do we call the imaginary line which is at 90 degrees to the surface? 


  The normal.
• What is refraction? 


  When a wave changes direction as it crosses a boundary. (bending light) .
• What happens to the speed of a wave as it enters a more dense medium? 


  The wave speed decreases. (slows down).