Coasts - LSQ Flashcards

1
Q

What type of system is the coastal system?

A

Open

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2
Q

Name the feedback: Where changes within the system slow down or stop further changes

A

Negative

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3
Q

Name the feedback: When a change in the system increases/ speeds up

A

Positive

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4
Q

What is the term used for in a system, when inputs and outputs are balanced

A

Dynamic Equilibrium

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5
Q

What scale is a beach

A

Small

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6
Q

What scale is a littoral cell

A

Large

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7
Q

What is the correct order for offshore, back shore, inshore and foreshore

A

Offshore, inshore, foreshore, back shore

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8
Q

What term is used for the most common wind direction?

A

Prevailing wind

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9
Q

What is the direction in the UK?

A

SW

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10
Q

Name the term: the distance over which the wind has blown and this will help determine the magnitude (size) of the waves

A

Fetch

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11
Q

What type of wave has a stronger swash and weaker backwash?

A

Constructive

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12
Q

Which has a more elliptical orbit

A

Constructive

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13
Q

What type of beach are produced when the waves break in parallel to the coasts

A

Swash Aligned

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14
Q

What type of beach are produced when the waves break at an angle to the coasts?

A

Drift Aligned

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15
Q

Name the current: strong current moving away from the shoreline. They develop when seawater is piled up along the coastline by incoming waves

A

Rip current

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16
Q

Name the process: the movement of cold water from deep in the ocean towards the surface. It replaces the warmer surface water and creates nutrient rich currents. These form part of the pattern of global ocean circulation currents

A

Upwelling

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17
Q

Which tide occurs after a new moon when the sun and the moon are aligned with the Earth?

A

Low spring tide

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18
Q

Which tide occurs after a full moon when the sun and the moon are aligned with the Earth?

A

High spring tide

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19
Q

Which tide occurs when the sun and moon are at right angles to the earth?

A

Neap

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20
Q

The sea level can rise by what value for every 1millibar drop in pressure?

A

1cm

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21
Q

Name the classification of a tidal range more than 4m

A

macrotidal

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22
Q

Name the classification of a tidal range 2-4m

A

mesotidal

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23
Q

Name the classification of a tidal range less than 2m

A

microtidal

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24
Q

Formula to predict wave energy

A

LH^2

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25
What type of coastline would experience the following? Wave energy is low, air pressure gradients are less extreme and rates of deposition often exceed rates of erosion
Low energy coastline
26
How many sediment (littoral cells) are there in The UK?
11
27
What are the larger littoral cells divided into?
subcells
28
Name the term: the breakdown and subsequent removal and transportation of material
erosion
29
What term is also used for hydraulic action?
Wave pounding
30
What is the usual pH of seawater?
7.5-8.5
31
Name another term for geology/rock type?
lithology
32
Name another term used for layers of rocks?
Strata
33
Name the process: disintegration of rock in situ
weathering
34
How many types of weathering processes are there?
3
35
Name the process: the movement of consolidated material (rock solid) and unconsolidated material (clay and soil) due to gravity
Mass movement
36
Which process would be more rapid rockfall or slumping
Rockfall
37
Name the type of transport: Finer sands and silt are carried along in the flow of water
Suspension
38
Name the other 3 types of transport
Traction, saltation and solution
39
Give another name for the transport of material by the wind
Aeolian
40
Name the term: A coast where brands of different rock type run at right angles to the coast. The differing resistance to erosion leads to the formation of headlands and bays.
Discordant
41
Name the opposite type of coastline to discordant
Concordant
42
Name the landform: a gently sloping (<5 degrees) relatively smooth marine surface caused by abrasion at the base of the cliff
Wave cut platform
43
Name the landform: is an inlet, a gulley or a narrow and deep cleft in the face of a cliff
geo
44
Sand produces beaches with a gentle gradient, what is it usually less than?
5 degrees
45
Shingle produces beaches with a gentle gradient, what is the gradient usually between?
10-20 degrees
46
Are larger pebbles found near the back of the beach or closer to the sea?
back
47
Are beach profiles steeper in summer or winter
Summer
48
What process will round and smooth pebbles?
Attrition
49
What % of coasts worldwide are suffering from net erosion?
70%
50
Name semicircular shaped depressions with coarser material around the edge and finer material in the middle
cusps
51
Name the beach deposited by waves during storm events (waves don’t usually affect this part of the beach)
Storm Beach
52
What is the term used for where the spit joins to the mainland?
proximal point
53
What is the term used for the furthest point of the spit that extents from the headland?
Distal point
54
What type of spit occurs where transport processes vary more - barbs form?
Compound spit
55
What landform forms where a spit forms on a coastline where there is a small offshore island and the ridge of beach sediment id deposited towards the small island
Tombolo
56
What is another name for a bar?
barrier beach
57
What is Chesil beach, Weymouth an example of?
Tombolo
58
What is Slapton Sands, Devon an example of?
Bar
59
What landforms occurs when accumulations of sand behind an active beach zone that is mounded by the wind and can become fixed in location by vegetation?
Sand dunes
60
What term is used for the dominant mix of vegetation species that characterise an environment given time for colonisation to occur and reach stability?
Climax vegetation
61
What term is used for the change in species over space?
Zonation
62
What term is used for a plant adapted to living in a dry arid habitat like a sand dune?
Xerophyte
63
How many different dunes are there in the formation?
5
64
What features are found in between the more mature dunes where the water table reaches the surface causing seasonal or even permenant waterlogging and surface water?
dune slacks
65
What is the name of the 3rd dune from the sea
Yellow dune
66
On an embryo dune what % of the sand is exposed?
80%
67
How tall do foredunes typically grow?
up to 5 m
68
What is the climax vegetation in the UK?
Oak woodland