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.

Question

Quizplus · Accepted Answer

Waves refract around the island and lose energy on the island, resulting in quieter water behind it. This allows sand drift to accumulate and the formation of a spit or tombolo.

Why Would Sand Be Deposited Behind a Small Island to Form