Flashcards in Coastal Deck (30):
When caves, which have developed on either side of a headland, join together they from a natural arch
The process whereby rock particles wear down through collisions with other rock particles
Water moves up a beach as a wave breaks. The return movement of the water back down the beach
Return of swash
It is a ridge of sand which forms across the mouth of a river. It is usually parallel to the coast
A wide indentation into the land by the sea, protected on each side by a headland.
when a joint between sea cave and the land surface above the cave becomes enlarged and air can pass through it. When water flows into cave, air is expelled through the joint sometimes producing a spray
A weakness such as joint is enlarged by wave action, creating a cylindrical tunnel which follows the line of weakness
A steep and usually high, rock face found at the edge of the land where it meets the sea
Identical to the coastline but consists of cliff rather than lower features
The margin of the land
When a wave is able to run up the beach and drain back again before the next wave arrives. The swash is more powerful than the backwash so deposition can occur
This is a form of wave erosion.
Pebbles and rocks are thrown against the cliff face by breaking waves which causes the undercutting of the cliff and it leads to the breakup of the cliff and the things being thrown at it
When a wave is able to run up the beach but unable to drain back again before the next wave arrives, thus the backwash if the previous wave interferes with the swash, reducing efficiency
Coastal areas which have become raised above current sea level.
Cause = isostatic adjustment
The mouth of a river where fresh water and sea water mix and tides have an effect.
The distance is open water over which the wind can blow and form waves
Areas of harder rocks tend to resist the erosive powers of the sea. The resulting area of land jutting out into the sea
When a wave breaks against a cliff it causes air to suddenly become compressed. As the water retreats the air is allowed to expand often explosively. Repetition can lead to break up of surrounding rock.
When a spit extends across the mouth of a river to the extent that it causes the river to become diverted along the coast, an area of water is created separated from the sea by a narrow strip of land
Solid matter carried by water.
Occurs when valleys parallel to the coast become flooded by sea, as the land becomes submerged, the ridges of land between the valleys become chain islands parallel to the new coast
Sloping coats where sediment can settle, can allow the build up of mud as a sheet.
Valleys flooded due to the submergence under the sea along a longitudinal coast
Sometimes called sounds
Longshore drift transports material along the coast. When yeh mouth of a river is encountered material starts to be deposited. This can result in a narrow ridge of material attached to the mainland at one end and ending at sea.
When a natural arch collapses, the remaining upright sections form ____ , isolates rocks sticking up out of the sea
Coastal areas which have become lowered below current sea level.
The movement of water in a breaking wave as it moves up the beach
The daily lovely of the sea
A bar linking an island to the mainland