Why Would Sand Be Deposited Behind a Small Island to Form

question 24

Multiple Choice

Why would sand be deposited behind a small island to form a spit or tombolo?

• A)The tidal affects are trivial behind the island,so the sand is not swept away.
• B)The island protects the coast from rip currents,preserving the sand.
• C)Waves refract around the island and the wave energy is dissipated on the island,allowing quiescent water behind,and sand drift to accumulate behind the island.
• D)The onshore current from one direction piles up sand here.

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