Which landform is a sandbank formed parallel to the coast and produced by longshore drift?

• A. Moraine
• B. Longshore Current
• C. Lagoon
• D. Longshore Bar

Answer: (D)

Longshore drift moves sediment along the coast as waves break at an angle, with one direction of movement from swash and backwash creating a zigzag along the shore. Over time, material can accumulate offshore in the nearshore zone, forming a ridge that runs parallel to the coastline. This offshore sandbank is called a longshore bar. It’s a landform created directly by the alongshore transport of sediment. Moraine is deposited by glaciers, a lagoon is a shallow body of water behind a barrier, and longshore current describes the alongshore flow itself rather than a landform. So the sandbank parallel to the coast produced by longshore drift is a longshore bar.