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Landform Development Answer (i) or (ii) - Leaving Cert Geography - Question B - 2013
Question B
Landform Development Answer (i) or (ii). (i) Explain with the aid of a labelled diagram(s) the formation of one landform of erosion that you have studied. Or (ii... show full transcript
Worked Solution & Example Answer:Landform Development Answer (i) or (ii) - Leaving Cert Geography - Question B - 2013
Step 1
Explain with the aid of a labelled diagram(s) the formation of one landform of erosion that you have studied.
Answer
Named Landform
The landform of erosion I have studied is the V-shaped valley.
Labelled Diagram
Explanation
A V-shaped valley is formed primarily by river erosion. The formation process involves several key stages:
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Headward Erosion: Water from rainfall flows into streams, which begin to erode the landscape downstream. The continuous movement of water enhances vertical erosion.
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Formation of a Steep Channel: The water cuts down into the bedrock, deepening the channel. The sides of the valley may be undercut by the flow of water, leading to steep valley sides.
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Transport of Material: As the river flows, it transports sediments and rocks downstream, which contributes to the erosive process.
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V-Shape Formation: Over time, the valley widens and deepens, creating the classic V-shape that characterizes these landforms.
Overall, the interplay of water flow, sediment transport, and geological factors leads to the distinct formation of a V-shaped valley.
Step 2
Describe and explain one process of mass movement that you have studied.
Answer
Named Process
The mass movement process I have studied is landslide.
Explanation
A landslide refers to the sudden and fast movement of rock, earth, or debris down a slope. This can occur due to various factors:
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Soil Saturation: Prolonged rainfall can lead to soil saturation, reducing the cohesion between particles, making them more prone to movement.
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Slope Instability: If the slope angle exceeds the angle of repose, the material can become unstable, leading to potential failure.
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Earthquake Activity: Seismic activity can trigger landslides by shaking the ground and destabilizing pre-existing slopes.
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Human Activity: Construction, deforestation, and other human activities can also destabilize slopes, increasing the risk of landslides.
In conclusion, landslides can have devastating effects on landscapes and human safety, contributing to the study of mass movement in geomorphology.