Sound

Sound

1. Produced By Objects Which Vibrate.

2. Vibrating Makes Air Particles Move Backward And Forwards.

   • Setting Up A Pressure Wave

3. Sound Travels As Longitudinal Waves

   • Particles In The Medium Move Backwards And Forwards
     • Same Direction As The Wave
       • Medium: Substance That A Wave Is Travelling In

4. Waves

   • Can Measure Waves With An Oscilloscope
   • Period Of A Wave Is Time For One Complete Wave
     • Period= 1/Frequency
       • Measured In Seconds
   • Frequency Is The Number Of Times Something Passes A Point In 1 Second
     • Frequency=1/Period
       • Measured In Hertz
   • Wave Length
     • Measured In Metres
     • Use Greek Letter Lambda As Symbol
     • Amplitude is the maximum distance the wave travels from its rest point.