Wave motion

• Waves can transfer energy from one place to another without transferring any matter
• Waves can transfer energy through solids, liquids, gases and empty spaces (vacuums)
• Frequency


  The number of complete waves passing a fixed point in a given amount of time, usually one second
• Period


  The time for one complete cycle
• Frequency and period

  Frequency refers to how often something happens, period refers to the time it takes to happen
• Wavelength


  The distance between a point on one wave and the same point on the next wave
• Amplitude


  The distance from the maximum disturbance to the undisturbed position
• 1. rays have very short wavelengths, visible light has medium wavelengths, and FM radio waves have much longer wavelengths