arch (sea arch) | Bridge of rock left above an opening eroded in a headland by waves.
(See page(s) 346)
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barrier island | Ridge of sand paralleling the shoreline and extending above sea level.
(See page(s) 346)
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baymouth bar | A ridge of sediment that cuts a bay off from the ocean.
(See page(s) 341)
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beach | Strip of sediment, usually sand but sometimes pebbles, boulders, or mud, that extends from the low-water line inland to a cliff or zone of permanent vegetation.
(See page(s) 340)
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beach face | The section of the beach exposed to wave action.
(See page(s) 340)
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berm | Platform of wave-deposited sediment that is flat or slopes slightly landward.
(See page(s) 340)
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breaker | A wave that has become so steep that the crest of the wave topples forward, moving faster than the main body of the wave.
(See page(s) 337)
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coast | The land near the sea, including the beach and a strip of land inland from the beach.
(See page(s) 344)
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coastal straightening | The gradual straightening of an irregular shoreline by wave erosion of headlands and wave deposition in bays.
(See page(s) 345)
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crest (of wave) | The high point of a wave.
(See page(s) 336)
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estuary | Drowned river mouth.
(See page(s) 347)
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fjord | A coastal inlet that is a glacially carved valley, the base of which is submerged.
(See page(s) 348)
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headland | Point of land along a coast.
(See page(s) 344)
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longshore current | A moving mass of water that develops parallel to a shoreline.
(See page(s) 338)
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longshore drift | Movement of sediment parallel to shore when waves strike a shoreline at an angle.
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marine terrace | A broad, gently sloping platform that may be exposed at low tide.
(See page(s) 340)
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rip current | Narrow currents that flow straight out to sea in the surf zone, returning water seaward that has been pushed ashore by breaking waves.
(See page(s) 338)
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sea cliff | Steep slope that retreats inland by mass wasting as wave erosion undercuts it.
(See page(s) 345)
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spit | A fingerlike ridge of sediment attached to land but extending out into open water.
(See page(s) 341)
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stack | A small rock island that is an erosional remnant of a headland left behind as a wave-eroded coast retreats inland.
(See page(s) 346)
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surf | Breaking waves.
(See page(s) 337)
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tombolo | A bar of marine sediment connecting a former island or stack to the mainland.
(See page(s) 342)
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trough (of wave) | The low point of a wave.
(See page(s) 336)
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wave-cut platform | A horizontal bench of rock formed beneath the surf zone as a coast retreats because of wave erosion.
(See page(s) 346)
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wave height | The vertical distance between the crest (the high point of a wave) and the trough (the low point).
(See page(s) 336)
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wavelength | The horizontal distance between two wave crests (or two troughs).
(See page(s) 336)
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wave refraction | Change in direction of waves due to slowing as they enter shallow water.
(See page(s) 338)
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