Coasts Flashcards
Give three examples of sedimentary rock.
Chalk, Clay and Sandstone
Which section of the English coastline is most resistant to erosion?
North West England
Identify x3 factors that influence the rates of coastal recession.
Prevailing wind direction, Geology (weak faults) and Destructive waves
What is the difference between concordant and discordant coastlines?
Concordant - Runs parallel to the coast
Discordant - Runs at a right angle to the coast/or alternate
True or False? Submergent coastlines are created by rising sea levels.
True
Identify one way in which vegetation stabilises sediment.
Stabilises by binding the roots together which makes sediment harder to erode
What is a ‘halophyte’?
A plant that can tolerate water (salt)
Give an example of a pioneer species in sand dune succession.
Marram Grass
Describe the geological structure of the UK
- Igneous and Metamorphic found in Northern Ireland and Scotland
- Sedimentary is found in England, more south
Give X3 examples of erosional landforms
- Headlands and Bays
- Shoreline platforms
- Cliffs
Which process transports sediment along the coast in a zig-zag pattern?
Longshore drift
Identify two reasons why deposition occurs along the coast
1.When water velocity slows down and hits the beach, dropping off sediment.
2. When the coastline changes shape
Give X3 examples of depositional landforms
- Spits
- Beaches
- Tombolos
Give X1 example of weathering and X1 example of mass movement.
- Weathering- Freeze-thaw
- Mass movement- Rockfall
What is the difference between Isostatic and Eustatic sea level change?
Isostatic:
1. Land rises/falls
2. Local process
Slow process
Eustatic:
1. Sea rises/falls
2. Global process
3. Quick process
X2 causes of Isostatic land level change?
Land sinks due to deposition of sediment
Land rises due to ice melting and reduction in weight
X2 causes of Eustatic sea level level change
Sea rises due to thermal expansion
Sea drops due to water evaporated by ice
X2 examples of emergent coastline landforms
- Fossil cliffs
- Raised beaches
X2 examples of submergent coastline landforms
Rias and Dalmation coast
What is the coastal recession case study?
Holderness
What are your coastal flooding case studies?
Bangladesh, Sri Lanka, Maldives and Florida
What local factors can influence flood risk on some coastlines?
- Removing vegetation
- Subsidence
3 Low lying land (Not as interesting as other points)
