The change in wavelength related to an energy source moving away or towards a receiver is explained by the

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      recessional effect
      power effect
      Doppler effect
      motion effect
      pitch effect
asked Mar 12, 2013 in Earth Science by anonymous
    

1 Answer

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Doppler effect
answered Mar 15, 2013 by h20 ~Top Expert~ (6,320 points)



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