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State whether the following is true or false.
The tide propagates as a shallow water wave even across the deepest ocean basins.

  • A.True
  • B.False
  • C.True only at large scales
  • D.False only at small scales

Answer: A

Its wavelength is thousands of kilometres against an ocean depth of only a few. Depth therefore controls the celerity throughout its propagation, and the whole water column takes part in the motion. Nothing about the tide resembles a deep water wave.

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