Q:

How may sound waves be characterised? As:

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How may sound waves be characterised? As:


  1. Longitudinal waves because the oscillations that they cause are along a line at right angles to the direction of propagation.
  2. Mechanical waves because they can only travel through a material medium.
  3. Waves because they allow for the oscillation of a medium without the transfer of energy
  4. Compressions and rarefactions because the nature of the oscillation of their electric and magnetic fields.

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B: Sound waves require a medium. Longitudinal waves oscillate parallel to their direction of propagation. Electric & magnetic fields are not involved. Choice C is correct but not specific enough.

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