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exams > Coasts geo > Flashcards

Coasts geo Flashcards

1
Q

Solution

A

Acidic properties in water dissolve minerals eg calcium carbonate in rocks such a lime stone

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2
Q

Abrasion

A

Waves fling sand and shingle against the rocks on the coast wearing the rock away

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3
Q

Hydronic action

A

The force of the wave compressed the air within air pockets of the rock on the coast pressure in the air pocket increases and the rock around it cracks explosively

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4
Q

Attrition

A

the action or process of gradually reducing the strength or effectiveness of someone or something through sustained attack or pressure.

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5
Q

Process of transportation

A

Long shore drift

Deposition

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6
Q

Long shore drift

A

The movement of pattering along the coast line in a zigzag pattern

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7
Q

Deposition

A

When waves loose there energy they deposit there load

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8
Q

Three factors that effect how waves are formed

A

Fetch
Speed of the wind
Length of time the wind blows over

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9
Q

Constructive waves

A

Help build the coast line

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10
Q

Destructive waves

A

Erode the coast line

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11
Q

Costal land form created by erosion

A

Head lands
Stumps
Waves cut platform

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12
Q

Head land

A

The coast starts of S a straight cliff over many years the coast erodes by three. Processes of erosion abrasion hydroelectric action and solution the soft rock wears away the hard rock juts out and the remaining hard rock forms a headland

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13
Q

Stump

A

The sea makes crack in the cliff the cracks get bigger and bigger to form a cave the cave get eroded all the way through until it’s an arch the arch collapses to form a stack which erodes in to a stump

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14
Q

Wave cut platforms

A

The waves carve wave cut notches in to cliff which grow until the rock above collapses this continues until slowly. The cliffs retreat leaving a wave cut platform

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15
Q

Costal land forms made by deposition

A

Bays spit and bar

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16
Q

Bays

A

Starts as a straight cliff over mating years erodes the soft rock wears awAy forming a bay

17
Q

Spit

A

Eroded materials is picked up by waves then transported by LSD deposition begins at a bend the deposited matireals build up away from the coast the spit goes into deeper water until strong wind curves it

18
Q

Bar

A

It is made offshore parallel to the shore and moved by strong waves( made of sand and shingle)

19
Q

How can coasts be managed

A

Hard engineering

Soft engineering

20
Q

Hard engineering

A

Hard engineering involves the building of entirely ARTIFICIAL structures using various materials such as rock, concrete and steel to reduce or stop the impact of coastal processes.

21
Q

Soft engineering

A

Soft engineering – beach nourishment, dune regeneration and marsh creation.

22
Q

Eg of hard engineering

A

Sea wall

23
Q

Eg of soft engineering

A

Artificial sand added

24
Q

Four types of erosion

A

Hydronic action
Solution
Abrasion
Attrition

exams (15 decks)

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