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    In this activity, students model how sound travels by sending waves along two stretched plastic slinkies tied together.

    By the end of this activity, students should be able to:

    • understand that sound is a longitudinal wave where particles in the medium vibrate back and forth along the same direction as the wave travels
    • see that a wave travels along as a series of compressions and expansions in the medium.

    Download the Word file (see link below) for:

    • introduction/background notes
    • instructions on what you need and what to do
    • discussion questions
    • extension ideas.
      Published 10 May 2011, Updated 21 November 2018 Referencing Hub articles