waves

• Transverse waves 


  This oscillates up and down

  The direction of energy transfer is perpendicular to the travel of oscillations
• Longitudinal waves

  These waves have Rarefactions - smaller areas of waves and Compressions - larger areas of waves

  The direction of energy transfer is parallel to the oscillations
• What the Properties of waves?

  Amplitude

  Wavelength

  Frequency

  Period
• amplitude 


  the undisturbed waves between to peak of a wave or the trout of a wave
• Wavelength 


  The Distance between Two Teaks or Trout of a wave
• Frequency


  The number of waves per second

  Measured in Hertz (Hz)
• Period 


  1

  ----------

  Frequency

  Time for one wave to pass a point
• what is the symbol for period?

  minutes/seconds
• what is the symbol for wavelength?

  λ (lambda)
• what is the symbol for amplitude?

  metres
• speed(v)= frequency(Hz) X distance (m)
• Describe a experiment for measuring an estimate for sound waves

  person A clashes symbols together

  person B starts timer and presses stop when symbols are heard
• Factors that can affect this experiment

  Distractions

  Slower reaction time

  Stimulants or Depressants

  More people B help find Outliers of Results
• Practical : Ripple Tanks 


  items needed:

  Ripple tank

  Water

  Lamp

  Paper

  Vibrating Bar

  Power Pack
• Practical: Ripple Tanks 


  Calculate a estimated wavelength

  Find the total distance between 10 waves

  Then divide the total distance by 10
• Practical : Ripple Tanks 


  Calculate frequency ( Hz )

  Use a slow motion camera

  Use a 10 second timer

  Count the amount of waves passing a certain point in 10 seconds

  Divide the amount of waves by 10
• wave speed 


  speed ( v ) = frequency ( Hz ) X wavelength ( L )