Landforms and their Evolution
Karnataka Board · Class 11 · Geography
Quick revision notes for Landforms and their Evolution — Karnataka Board Class 11 Geography. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
Introduction to Landforms and Evolution
- Landforms are small to medium sized parts of Earth's surface with distinct physical characteristics
- Landscapes are made up of several related landforms together (large tracts)
- Every landform has a beginning and undergoes continuous change through time
Landforms Created by Running Water
- Running water is the most important geomorphic agent in humid regions
- Two components: overland flow (sheet flow) and linear flow (streams and rivers)
- Three stages of landscape development: Youth, Mature, and Old Age
Erosional Landforms by Running Water
- Valleys: Start as rills, develop into gullies, then valleys (V-shaped, gorge, canyon)
- Potholes: Circular depressions in rocky stream beds formed by abrasion
- Plunge pools: Large, deep holes at the base of waterfalls
Depositional Landforms by Running Water
- Alluvial fans: Cone-shaped deposits at mountain foot, coarse materials
- Deltas: Low cones at river mouths, well-sorted deposits with clear stratification
- Floodplains: Major depositional landform with active and inactive parts
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Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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