問題一覧
1
3 examples of an igneous rock?
Granite, Basalt , Obsidian
2
Name a metamorphic rock?
Marble
3
Name 4 sedimentary rocks?
Chalk, Coal, Limestone, Sandstone
4
What are the two weaknesses in rocks structure that influence coastal Erosion?
Joint, faults
5
What is a discordant coastline?
Its when bands of differing rock type run perpendicular to the coast
6
What is a Concordant Coastline?
When the rock types run parallel to the coastline
7
What type of Coastline does this image present?
Discordant
8
What type of Coastline does this image present?
Concordant
9
Name three factors that control how big a wave is?
wind, time over water, fetch
10
What is fetch when talking about waves?
The distance the waves has travelled over the water
11
What causes waves?
Wind
12
What does prevalling mean?
The direction it mostly comes from
13
Where does the Uk's prevalling wind come from?
SW
14
What are the three types of Weathering?
Physical , Biological , Chemical
15
What is Weathering?
The breaking down or dissolving of rocks and minerals on the Earth's surface
16
What is Chemical Weathering?
Describes the process of Chemicals in rain water making changes to the minerals in a rock
17
What is biological Weathering?
Caused by the movements of plants and animals
18
What is Physical (Mechanical) Weathering?
The process of rocks crumbling due to rain, wind, or other atmospheric conditions
19
What is deposition?
The laying down of Sediment carried by wind, flowing water, the sea or ice
20
What is swash
When a wave washes up onto the shoreline (when a wave breaks, carries Sediment down the beach)
21
What is Backswash?
When the water runs back down the beach from the swash (carries Sediment down the beach)
22
What is Longshore drift?
Moves material along the Coastline in the direction of the prevalling wind
23
What direction does Longshore drift go in along a Coastline?
South to north
24
Describe how a stump is formed?
Mainland, Crevice, Cave, Arch, Stack, Stump
25
How does a mainland turn to a crevice?
Chalk has weaknesses in its structure (joints), hydraulic action expand these into crevices
26
How does a Crevice turn into a cave?
Crevices are expanded by waves to form caves
27
How does a Cave turn into an Arc?
The cave expands slowly due to Hydraulic action and forms an arc
28
How does a stack turn into a stump?
The bottom of the stack is eroded and weathered causing the top of the stack to collapse forming a stump
29
What is erosion
The wearing away of rocks along the coastline
30
What are the 4 types of Erosion?
Solution, Hydraulic Action, Attrition, Abrasion
31
How does an Arc turn into a stack
The arc collapses due to the lands holding it together is erdoded which forms a stack
32
What is Solution? (in terms of Erosion)
When the sea water dissolves certain rock types
33
What is Hydraulic Action? (when talking about Erosion)
Waves/water crashing against the Coastline causing material to be dislodged and carried away by the sea
34
What is Attrition? (when talking about Erosion)
When rocks that the river is carrying knock against each other, causing them to become smaller and rounder
35
What is Abrasion? (when talking about Erosion)
When materials/rocks are picked up by strong waves and are thrown against the Coastline causing more material to be brocken off and carried away by sea
36
Select the Erosional landform
Wave cut platform
37
What is Saltation?
Medium sized materials bounce along the sea bed getting smaller everytime
38
What is suspension?
Small particles picked up by sea bed and are suspended in the water
39
What is traction?
Large rocks roll along the sea bed
40
What is Solution?
The weak acids in the water dissolving the rocks
41
What are old Harry Rocks made from?
Chalk
42
How is a Cove formed?
Weathering processes in the water will find weaknesses such as a fault/crack in the hard rock causing the soft rocks behind to be exploited by Erosion more than the hard rocks which forms a circular bay with a narrow entrance
43
Which one is a famous Cove in the UK?
Lulworth Cove
44
Which place is a famous Arch in the UK?
Durdle Door