Geography (Geomorphic Processes)
This Exam Covers the Following Topics
- Geomorphic Processes:
- Interaction between exogenic and endogenic forces
- Types of geomorphic agents (e.g., wind, water, glaciers)
- Gradation (degradation and aggradation)
- Dynamic equilibrium between forces shaping Earth’s surface
- Tectonic activity and its influence on landforms
- Endogenic Processes:
- Diastrophism (e.g., orogeny and epeirogeny)
- Volcanism and tectonic activity
- Role of geothermal energy in shaping landforms
- Uplift and crustal movements
- Exogenic Processes:
- Erosion and deposition
- Weathering (chemical, physical, and biological)
- Wind, water, glaciers as geomorphic agents
- Transportation and deposition of materials
- Landforms created by erosion (e.g., valleys, dunes, deltas)
- Mass wasting processes (e.g., landslides, creep, slumping)
- Weathering:
- Chemical weathering (hydration, oxidation, carbonation)
- Physical weathering (frost action, thermal expansion, exfoliation)
- Biological weathering (root wedging, burrowing organisms)
- Factors influencing the rate of weathering
- Mass Movements:
- Creep, rock falls, landslides, debris avalanches, solifluction
- Factors contributing to mass movements (e.g., heavy rainfall, vegetation)
- Influence of climate and tectonics on mass movements
- Soil Formation:
- Factors affecting soil formation (parent material, topography, climate, biological activity, time)
- Processes like eluviation, leaching, infiltration
- Influence of weathering on soil profiles
- Role of vegetation and organic matter in soil development
- Karst Topography:
- Carbonation and the formation of karst landscapes
- Development of caves, sinkholes, and other karst features
- Human Impact on Geomorphic Processes:
- Effects of deforestation, construction, and agriculture on geomorphic processes
- Accelerated erosion and mass movements due to human activity
- Climatic Influences on Geomorphic Processes:
- Impact of polar, temperate, and tropical climates on weathering, erosion, and deposition
- Role of glaciers, wind, and running water in different climatic regions
- Landforms and Landscape Evolution:
- Formation of U-shaped and V-shaped valleys
- Alluvial fans, deltas, and floodplains
- Cirques, moraines, and glacial landforms
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