Which is a long, narrow sand ridge projecting from the coast into the sea?

Correct answer: Spit

The correct answer is C, a spit. Waves approaching the shore at an angle can move sediment along the coast through longshore drift. Where the coastline changes direction, a bay interrupts the current, or wave energy decreases, sand and gravel may accumulate in a narrow ridge attached to the mainland at one end and extending into the sea. This landform is a spit. A, a horn, is a sharp mountain peak shaped by glacial erosion. B, a yardang, is a long ridge carved by wind in an arid region, not a coastal sand deposit. D, a tarn, is a small mountain lake commonly occupying a glacial hollow. The defining clue is “attached to the coast and projecting into the sea.” Memory cue: a spit is like a finger of sand pointing outward from the shore.