Coast Flashcards
(25 cards)
What are landforms of deposition?
Landforms created by the accumulation of sediment, such as beaches, deltas, and sand dunes.
What is a headland?
A coastal landform that juts out into the sea, typically formed by resistant rock.
What is a bay?
A body of water partially enclosed by land, often found between two headlands.
What are coastal caves?
Natural formations created by the erosion of rock along the coastline, often due to wave action.
What is longshore drift?
The movement of sediment along the coast parallel to the shoreline due to wave action.
True or False: Longshore drift can lead to the formation of beaches.
True
What is the primary cause of coastal erosion?
Wave action and currents that wear away rocks and sediments along the shore.
Fill in the blank: A _____ is formed when waves erode the sides of a headland, creating a cave.
cave
What is the role of vegetation in coastal protection?
Vegetation helps stabilize sand dunes and reduce erosion by holding soil in place.
What is a spit?
A narrow landform extending from the coast into the water, formed by deposition of sediment.
What type of rock is most likely to form headlands?
Resistant rock, such as granite or limestone.
True or False: Bays are typically more sheltered than open coastlines.
True
What is beach nourishment?
The process of adding sand or sediment to a beach to combat erosion and increase beach width.
What human activities can accelerate coastal erosion?
Construction, dredging, and the removal of vegetation.
What is a delta?
A landform created by the deposition of sediment at the mouth of a river, where it meets a body of water.
What is the difference between a headland and a bay?
A headland is a protruding piece of land, while a bay is an inlet of water between two headlands.
What effect does longshore drift have on sediment distribution?
It transports sediment along the coast, reshaping beaches and coastal landforms.
Fill in the blank: Coastal _____ can be created using structures like seawalls and groynes to protect against erosion.
protection
What is a groyne?
A barrier built at right angles to the shore to trap sand and reduce erosion.
True or False: Coastal caves can eventually become arches or stacks due to continued erosion.
True
What is the main purpose of coastal defenses?
To protect the coastline from erosion and flooding.
What landforms are typically found at the stage of coastal erosion?
Cliffs, wave-cut platforms, and coastal caves.
What is the primary factor influencing the rate of coastal erosion?
Wave energy and the type of rock present.
What coastal feature often results from the deposition of sand by longshore drift?
Beaches
