📘 Geography Optional – Paper I
Page 3 – Aeolian & Coastal Geomorphology
Q1. Discuss the role of wind as an agent of erosion. (15 Marks)
Introduction: Wind is an important geomorphic agent in arid and semi-arid regions.
- Deflation – Removal of loose particles
- Abrasion – Sand blasting effect
- Attrition – Collision of particles
Conclusion: Wind shapes desert landscapes into unique landforms.
Q2. Explain the formation and types of sand dunes. (15 Marks)
- Barchan – Crescent-shaped
- Seif – Longitudinal dunes
- Transverse dunes
- Parabolic dunes
Dune formation depends on wind direction and sand supply.
Q3. What are Inselbergs and Yardangs? (10 Marks)
Inselberg: Isolated hill rising abruptly from a plain.
Yardang: Streamlined ridge formed by wind erosion.
Q4. Describe the process of coastal erosion. (15 Marks)
- Hydraulic action
- Abrasion
- Attrition
- Solution
Results in cliffs, wave-cut platforms and sea caves.
Q5. Explain coastal depositional landforms. (15 Marks)
- Beaches
- Spits
- Bars
- Tombolos
- Lagoons
Q6. Differentiate between Emergent and Submergent coasts. (10 Marks)
| Emergent Coast | Submergent Coast |
|---|---|
| Land uplifted | Land submerged |
| Raised beaches | Rias & Fjords |
Q7. Explain the formation of Coral Reefs. (15 Marks)
- Fringing reefs
- Barrier reefs
- Atolls
Darwin’s Subsidence Theory explains their evolution.
Q8. Discuss coastal regulation challenges in India. (15 Marks)
- Sea-level rise
- Coastal erosion
- Cyclones
- CRZ regulations
Q9. Compare Aeolian and Coastal landforms. (10 Marks)
| Aeolian | Coastal |
|---|---|
| Sand dunes | Beaches |
| Yardangs | Cliffs |
Q10. Explain the importance of coastal geomorphology in disaster management. (15 Marks)
- Tsunami risk assessment
- Cyclone vulnerability
- Coastal zone planning
- Blue economy development
📊 Page 3 Complete | Total Questions So Far: 30 / 1000
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