Spits and Bars
Spits are narrow ridges of sediment extending from land into deeper water or across a bay mouth, while bars are ridges formed across bays or between islands and the mainland. Both form where sediment transport is interrupted and accumulates.
Real World
Spurn Head in East Yorkshire is a 5.5-kilometre recurved spit formed by southward longshore drift along the Holderness coast; its curved tip reflects wave refraction from the Humber Estuary and it has been breached and rebuilt multiple times in recorded history.
Exam Focus
When explaining spit formation, always include the trigger for deposition (change in direction/depth) — answers that only describe shape score poorly.
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