Class 11th Physical Geography NCERT Summary

Jul 14, 2026

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Concise summary of Class 11 Physical Geography (NCERT), covering geography as a discipline, Earth’s origin and evolution, and key scientific theories such as Big Bang, formation of stars and galaxies, planetary formation stages, terrestrial versus Jovian planets, and leading hypotheses for the Moon’s origin, alongside early Earth and lithosphere evolution concepts.

LanguageEnglish

CategoryExam

FormatPDF

Pages165

Reading Time6 h 56 min

AccessFree to download

# PRELIMS PREPARATORY PROGRAMME 2024 􀀖 Affordable, Effective, and Personalized􀀖 # Class 11th Physical Geography NCERT SummaryCovers 1. Geography as a Discipline 2. The Origin and the Evolution of the Earth 3. Interior of the Earth 4. Distribution of Oceans and Continents 5. Minerals and rocks 6. Geomorphic Processes 7. Landforms and their Evolution 8. Composition and Structure of the Atmosphere 9. Solar Radiation, Heat Balance and Temperature 10. Atmospheric Circulation and Weather Systems 11. Water in the Atmosphere 12. World Climate and Climate Change 13. Water (Oceans) 14. Movements of Ocean Water 15. Life on the Earth Join: https://t.me/ISSF_UPSC (Touch to Join) ## Chapter 1 : Geography as a Discipline Branches of Geography Based on Schematic Approach Physical Geography: 1. Geomorphology: Study of landforms, evolution, and related processes. 2. Climatology: Focus on atmosphere structure, weather elements, climates,and climatic regions. 3. Hydrology: Study of water realms on Earth's surface, including oceans,lakes, rivers, and their impact on life forms. 4. Soil Geography: Examination of soil formation, types, fertility, distribution,and utilization. ### Biogeography: 1. Plant Geography: Examines spatial patterns of natural vegetation. 2. Zoo Geography: Studies spatial patterns and characteristics of animalsand habitats. 3. Ecology/Ecosystem: Scientific study of species' habitat characteristics. 4. Environmental Geography: Addresses global environmental issues suchas land degradation, pollution, and conservation. ## Interesting Points: ● The term“geography” coined by Greek scholar Eratosthenes, derived from"geo" (earth ) and "graphos" (description) . ● Soils formed through pedogenesis process. ## Chapter 2: The Origin and the Evolution of the Earth Modern Theories of Evolution: Origin of the Universe ### Big Bang Theory: ● Proposed as the expanding universe hypothesis. ● Edwin Hubble's evidence in 1920 showed the universe's expansion. ● Distance between galaxies increases, indicating ongoing expansion. ### Development of the Universe: ● Initially, all matter existed in a singular atom with infinite temperature anddensity. ● Big Bang occurred around 13.7 billion years ago, leading to rapidexpansion. ● Energy converted into matter, and within three minutes, the first atomformed. ● Temperature dropped, making the universe transparent. ### Formation of Stars: ● Galaxies form from accumulation of hydrogen gas in nebulae. ● Localized clumps of gas grow denser, forming stars, believed to occur 5-6billion years ago. ### Galaxies: ● Contain numerous stars spread over vast distances, with diametersranging from 80 ,000-150 ,000 light-years. ● Formation influenced by uneven distribution of matter and energy, causinggravitational forces to draw matter together. ### Formation of Planets: ● First Stage: ○ Gravitational force forms a core within gas lumps, creating

Jul 14, 2026

Upload by Aurora