• Question: What is the Doppler Effect?

    Asked by sgrover to Amy, Drew, Sara on 23 Jun 2011.
    • Photo: Drew Rae

      Drew Rae answered on 23 Jun 2011:

      Hi. The doppler effect is compression or expansion of waves due to something moving towards you or away from you. You can hear it most easily in sound waves, where the compression results in a higher pitched sound coming toward you, and expansion means a lower pitched sound going away from you.

    • Photo: Amy MacQueen

      Amy MacQueen answered on 23 Jun 2011:

      Hey sgrover!

      Brilliant question! The Doppler effect is the change that you notice in the frequency of a wave when the source of that wave is moving relative to you! Have you seen this video – Charlie explains it pretty well!! 🙂 🙂