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Properties of Waves - Islander6thGradeMathScience.ppt

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Properties of Waves - Islander6thGradeMathScience.ppt Powered By Docstoc
					Properties of Waves
          Properties of Waves
s There are 4 basic properties   Note taking example:
  s   Amplitude                  Properties of waves

  s   Wavelength                 Amplitude
                                 (**leave space**)
  s   Frequency                  Wavelength

  s   Speed                      (**leave space**)
                                 Frequency
                                 (**leave space**)
                                 Speed
                                 (**leave space**)
                           Amplitude
s Amplitude is the maximum
                                          Note taking:
  distance the medium moves
  away from its rest position             Amplitude
                                          Max distance the medium
s How do you find amplitude?              moves away from its rest
  s Transverse waves- measure             position
    the distance from the rest            §distance from rest position to
    position to a crest or trough         crest/trough
     s If a wave has really high crests
       and really low troughs, it has a
       large amplitude
  s Longitudinal waves- measure
    compressions or rarefactions
     s If a wave has really close
       compressions and loose
       rarefactions, it has a large
       amplitude
               Amplitude

A= Amplitude
              Amplitude
Which has a
larger
amplitude A
or B? Why?
                   Wavelength
s How do you find                  Note taking:
  wavelength?
  s Transverse wave- distance
    between two crests or two
    troughs
  s Longitudinal wave- distance
    from the beginning of one
    compression (or rarefaction)
    to the beginning of the next
    compression (or rarefaction)
                         Frequency
s Frequency is the number
  of complete waves per        A
  second
  s Measured in hertz (Hz)
  s A wave that occurs once    B
    per second, has a
    frequency of 1 Hz
   Note taking:                Practice:
   Frequency
                               If 1 second passes, what
   Number of waves per         is the frequency of Wave
   second
                               A? Wave B?
   §measured in hertz (Hz)
                Speed
s Speed (velocity) is how fast a wave
  travels
s How do you find speed?
  s Speed= Wavelength • Frequency
    Mathematical Formulas

s Speed= Wavelength • Frequency

s Frequency= Speed/Wavelength

s Wavelength= Speed/Frequency

				
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posted:2/20/2014
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