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Examine the role of the processes of deposition on the formation of any one landform that you have studied - Leaving Cert Geography - Question B - 2017
Question B
Examine the role of the processes of deposition on the formation of any one landform that you have studied. Or Describe and explain the factors governing the opera... show full transcript
Worked Solution & Example Answer:Examine the role of the processes of deposition on the formation of any one landform that you have studied - Leaving Cert Geography - Question B - 2017
Step 1
Examine the role of the processes of deposition on the formation of any one landform that you have studied.
Answer
To answer this question, I will discuss the role of deposition in the formation of a delta as the chosen landform.
Introduction to Deposition
Deposition is the process through which sediment, soil, and rocks are added to a landform. It occurs when the forces carrying these materials, such as water, wind, or ice, lose their energy and can no longer transport their load.
Role of Deposition in Delta Formation
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Sediment Transport: Rivers carry sediments from upstream areas. As the river approaches a larger body of water, its velocity decreases, causing sediments to settle out of suspension.
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Formation of Delta: When the river deposits its load at the mouth, it creates a delta. The shape of the delta is influenced by the balance between deposition and the reworking actions of waves and tides.
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Vegatation Growth: Over time, deposited sediments can support vegetation, creating more stable landforms which continue to grow and evolve through further deposition.
Conclusion
In summary, the processes of deposition are crucial in forming deltas, transforming riverine deposits into diverse ecosystems and new landforms.
Step 2
Describe and explain the factors governing the operation of any one mass movement process that you have studied.
Answer
For this question, I will describe the factors influencing landslides as a mass movement process.
Introduction to Landslides
Landslides involve the downward movement of rock, soil, and debris under the influence of gravity. Various factors affect their operation, leading to their frequency and intensity.
Factors Governing Landslides
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Slope Angle: Steeper slopes are more prone to landslides. Increased gravitational force makes materials on a steep slope unstable.
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Water Content: The presence of water can add weight to the slope and reduce friction between particles, increasing the likelihood of a landslide.
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Vegetation: Plant roots help stabilize the soil. The removal of vegetation through logging or fire can trigger landslides due to soil loosening.
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Earthquakes: Seismic activity can disrupt the stability of slopes, leading to sudden landslides.
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Human Activity: Construction, mining, and other activities can destabilize slopes, raising the risk of landslides.
Conclusion
In conclusion, the operation of landslides is governed by a variety of factors including slope angle, water content, vegetation, earthquakes, and human activity, all of which interact to influence the likelihood and severity of landslide events.