Why Are Inlets Through Barrier Bars or Barrier Islands Not

question 33

Multiple Choice

Why are inlets through barrier bars or barrier islands not closed by longshore drift of sand?

• A)Such inlets are always the outlets for onshore rivers to reach the sea, so they flush the sand out.
• B)Rapid flow of water back and forth through the inlet as tides rise and fall keeps it clear.
• C)Longshore sand drifted into such inlets drops into deeper water, so it drifts out to sea.
• D)Sand drifted into such inlets encounters brackish water from the inlet and dissolves.
• E)Sand drifted into such inlets is carried into the lagoon by incoming waves.

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