Coastal Processes, Characteristics & Landforms - SUNDAY MORNING COFFEE - AQA GCSE 9-1 Geography 2021
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- čas přidán 19. 06. 2024
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Timestamps:
01:04 Video Overview
01:36 Waves
02:28 Weathering
03:28 Erosion, Transportation and Deposition
04:25 Erosional Landforms
05:26 Depositional Landforms
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Thanks, rlly helpful
My notes from this video-
Coastal landscapes
Waves:
constructive- longer wave length, powerful swash therefore this constructs the beaches and deposits materials
destructive-shorter wave length, powerful backwash (weak swash) therefore, materials are dragged into the sea therefore eroding the coast
Weathering and erosion
Weathering is the breaking down of rocks on earths surface whereas erosion is the breaking down of rocks by the moving sea
there are 3 types of weathering
Mechanical- when rocks are broken down by processes like freeze-thaw weathering
biological-action of plants and animals (tree roots) causing the rock to split apart.
chemical- rocks reacting to chemical reactions (acidic rain
Overall, these can lead to mass movement (downward movement of sliding of a material)
Examples
- slumping, where river erodes the bottom of valley slope,making it steeper. material above slides downwards, particularly is saturated
- sliding, where rocks, weathered or eroded material or earth moves down a slope. Gravity pulls the weekend material quickly downwards
Erosion- breaking down of the base of rock on the cliffs,
hydraulic action- impacts of water again the coastline
Abrasion- rocks and pebbles carried by waves
Solution-chemical action of seawater which dissolves some rocks
Attrition- rocks rubbed together to form ambler peaces
Transportation- where rocks are tranported
Traction- larger boulders of rocks rolled over the sea bed
Suspension- sand ad small particles are carried along in the flow
Solution-chemical action of seawater which dissolves some rocks
Saltation-Smaller stones are bounced along the sea bed
Longshore drift.
Deposition-finally deposited where could be forming spits and bars
erosional landforms-
arch- formed by 2 caves erode back from either sides of headland and meet in the middle
Cave- formed when the waves erode a weakness in the rocks such as joint or fault
Stack- formed when arch collapses
stumps- eroded stacks
Depositional landforms-
beaches
spits
bars
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Thanks. Please share with anyone else studying GCSE Geography!
Good luck with all your assessments!
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Glad it was helpful!
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Great to hear! Hope the studies are going well
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Bro this video is very helpful and straight to point same things that my teacher taught us.
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How was it
Q
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How