Sound

Sound

1. Longitudinal waves

   • Wave energy is parallel to the oscillator (slinky)
     • Cannot travel through a vacuum

2. Pitch and Volume

   • Frequency of a wave = pitch of sound
     • Frequency = number of waves/second
   • Amplitude of a wave = Volume of sound
     • Amplitude = how deep the troughs are

3. Humans cannot hear over 20,000Hz

   • Ultrasonic is any sound over 20,000Hz