Sound

• Waves can be longitudinal or transverse
• What is amplitude?


  The distance from the middle to the top or bottom of the wave
• What is wavelength?


  The distance between a point on the wave to the same point on the next wave
• What is trough?


  bottom of the wave
• What is peak?


  top of the wave
• What is frequency?


  how many waves go past a particular point in a second
• What frequency measured in?

  Hertz (Hz)
• What is it called when waves meet?

  superpose
• How is sound produced?

  Vibration
• Sound is a longitudinal wave
• What are the parts of the outside of your ear?

  • pinna
  • auditory canal
  • eardrum
• what part is in the middle of your ear?

  ossicles
• the auditory nerve sends electrical signals to the brain via the cochlear nuclei
• What are the parts of the inner ear?

  • cochlea
  • semi-circular canals
• • hearing can be damaged by:
  • a hole in the ear drum
  • canal blocked with wax
  • loud sounds or injury