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What type of wave is exhibited by amber waves of grain ?

  1. Apr 21, 2008 #1
    What type of wave is exhibited by "amber waves of grain"?

    1. The problem statement, all variables and given/known data

    What type of wave is exhibited by "amber waves of grain"/

    2. Relevant equations

    Transverse waves move particles in a direction perpendicular to the direction of the wave.

    Longitudinal waves move particles in a direction parallel to the direction of the wave.



    3. The attempt at a solution

    I have no clue. I youtubed "amber waves of grain", but frankly I can't tell what it is.

    Help please?
     
  2. jcsd
  3. Apr 21, 2008 #2

    Doc Al

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    Staff: Mentor

    Imagine a field of tall grass rippling in the wind.
     
  4. Apr 21, 2008 #3
    I'd have to guess, transverse, however, is the medium the grass or the air?
     
  5. Apr 21, 2008 #4

    Doc Al

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    Staff: Mentor

  6. Apr 21, 2008 #5
    Oh, the grass moves in the direction of the wave and thus would be a longitudinal wave.

    Could you also say that the period of time when the grass is bent represents the compressions and the period of time it returns to its erect position is the rarefaction?
     
  7. Apr 21, 2008 #6

    Doc Al

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    Staff: Mentor

    Good!

    Something like that. When the grass squashes together would be a compression.
     
  8. Apr 21, 2008 #7
    thank you.
     
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