NCERT Geography notes
Geography glossary A–Z
2,741 terms explained, 857 in depth.
Geomorphology
- Geography as a Discipline: Nature, Branches and Approaches — classical (Eratosthenes, Ptolemy, Varahamihira) - Humboldt and Ritter (19th century) - systematic and regional geography
- Origin and Evolution of the Earth and the Solar System — Big Bang (about 13.7 billion years ago) - formation of the Earth (about 4.6 billion years ago) - origin of life
- Interior of the Earth: Earthquakes, Volcanoes and the Layered Earth — present-day structure; major earthquakes and eruptions (Bhuj 2001, Tohoku 2011, Turkey-Syria 2023)
- Minerals, Rocks and the Rock Cycle — geological time; Indian rock systems (Archaean, Dharwar, Cuddapah, Vindhyan, Gondwana, Deccan Traps, Tertiary)
- Continental Drift, Sea-floor Spreading and Plate Tectonics — Pangaea (about 200 million years ago) - Wegener's continental drift (1912) - sea-floor spreading (Hess, 1960s) - plate tectonics (1967)
- Geomorphic Processes: Weathering, Mass Movement, Erosion and Soil Formation — continuous processes; present-day examples
- Landforms and their Evolution: Rivers, Groundwater, Glaciers, Waves and Wind — cycle of erosion (Davis); present-day landscapes in India and the world
Climatology
- Atmosphere: Composition, Structure and Elements of Weather — present-day atmosphere; weather observation from the IMD (1875) to automatic weather stations and satellites
- Solar Radiation, Heat Balance and Temperature — present-day energy balance
- Atmospheric Pressure, Winds and General Circulation — present-day circulation; El Nino and La Nina events
- Air Masses, Fronts, Cyclones and Thunderstorms — present-day weather systems; recent cyclones in India (Fani 2019, Amphan 2020, Biparjoy 2023)
- Water in the Atmosphere: Humidity, Condensation, Clouds and Precipitation — present-day processes
- World Climate Classification: Koeppen's Scheme — classification by Koeppen (1918, revised 1936)
- Climate Change: Causes, Evidence and the Global Response — past climates (ice ages, the Little Ice Age) - industrial-era warming - Paris Agreement (2015) - COP outcomes to date (verify current)
Oceanography and Biogeography
- Oceans: Hydrological Cycle, Relief of the Ocean Floor, Temperature and Salinity — present-day oceans
- Movements of Ocean Water: Waves, Tides and Currents — present-day oceans; tidal energy in India (Gulf of Khambhat, Gulf of Kachchh, Sundarbans)
- Biodiversity and its Conservation — Earth Summit (1992) and the CBD - Kunming-Montreal Global Biodiversity Framework (2022); Indian conservation laws from the Wildlife (Protection) Act 1972 to the 2022 amendment
- World Physical Features and Natural Regions — present-day world map
Physical Geography of India
- India: Location, Size, Extent and Divisions — present-day India (28 states and 8 Union Territories; verify current)
- India and her Neighbours — present-day borders; ancient links (Dvaraka to Dvaravati, Ayodhya to Ayutthaya)
- Structure and Physiography of India: Himalayas, Plains, Peninsula, Coasts and Islands — Archaean Peninsular Block - Tertiary Himalayan orogeny - Quaternary Indo-Gangetic plains
- Drainage System of India: Rivers, Basins and Patterns — evolution of Himalayan drainage (Indo-Brahma hypothesis) - present-day rivers; interlinking of rivers (Ken-Betwa, 2021)
- Climate of India and the Monsoon — monsoon theories (Halley 1686 to jet-stream and ENSO/IOD links) - present-day seasons
- Natural Vegetation and Forests of India — National Forest Policy 1952 and 1988 - India State of Forest Report (biennial; verify current)
- Soils of India: Types, Degradation and Conservation — ICAR soil classification (8 groups); Soil Health Card scheme (2015)
- Natural Hazards and Disaster Management in India — Yokohama Strategy (1994) - Hyogo (2005) - Sendai Framework (2015-2030); Disaster Management Act 2005 (amended 2025; verify current)
Human and Economic Geography of the World
- Human Geography: Nature, Scope and Approaches — environmental determinism (19th century) - possibilism - neo-determinism (Griffith Taylor) - quantitative, radical, behavioural and humanistic schools
- World Population: Distribution, Density, Growth and Migration — Malthus (1798) - demographic transition - world population passed 8 billion (November 2022)
- Human Development: Concept, Approaches and Measurement — Mahbub ul Haq and Amartya Sen (1990s) - first UNDP Human Development Report (1990) - latest HDR (verify current)
- Primary Activities: Gathering, Pastoralism, Agriculture and Mining — hunting and gathering to commercial agriculture; present-day world patterns
- Secondary Activities: Manufacturing and Industrial Location — Industrial Revolution - present-day industrial regions
- Tertiary, Quaternary and Quinary Activities — service economy; IT-BPM and knowledge outsourcing
- World Transport and Communication — trans-continental railways and canals (Suez 1869, Panama 1914) - present-day networks and corridors (INSTC, IMEC)
- International Trade: Patterns, Ports and the WTO — barter and the silk route - GATT (1948) - WTO (1995) - regional trade blocs
Human and Economic Geography of India
- Population of India: Distribution, Density, Growth and Composition — Census 1872 and 1881 - Census 2011 - Census 2027 (verify current)
- Human Settlements and Urbanisation in India — ancient towns (Varanasi, Prayagraj, Pataliputra, Madurai) - medieval and colonial towns - Smart Cities Mission (2015) and AMRUT
- Natural Resources: Classification, Planning and Sustainable Use — Club of Rome (1968) - Brundtland Report (1987) - Rio Earth Summit and Agenda 21 (1992) - SDGs (2015)
- Land Use, Farming Systems and Cropping Seasons in India — early agriculture and ancient Indian farming knowledge - Green Revolution (1960s) - present-day land use statistics
- Major Crops of India: Distribution and Conditions — present-day production (verify current); International Year of Millets (2023)
- Water Resources of India: Availability, Use and Conservation — ancient hydraulic structures - multipurpose projects (Nehru's 'temples of modern India') - Jal Jeevan Mission (2019) and Jal Shakti Abhiyan
- Mineral Resources of India: Distribution and Conservation — present-day production and reserves (verify current); MMDR Act amendments (2015, 2023) and critical minerals (2023)
- Energy Resources of India: Conventional and Non-conventional — present-day energy mix; 500 GW non-fossil capacity target for 2030 (verify current)
- Manufacturing Industries of India: Location and Distribution — cotton mill in Mumbai (1854) and TISCO (1907) - present-day industrial clusters and corridors
- Transport and Communication in India — first railway (1853) - Golden Quadrilateral (1999) - Bharatmala and Sagarmala, Gati Shakti (2021)
- India's International Trade and Tourism — colonial trade - post-1991 liberalisation - present-day trade (verify current)
- Regional Planning and Sustainable Development in India — Five Year Plans - target area and hill area programmes (Fifth Plan, 1974-79) - NITI Aayog (2015) and Aspirational Districts (2018)
- Geographical Issues: Pollution, Urban Waste, Slums and Land Degradation — Namami Gange (2014) - Swachh Bharat Mission (2014) - National Clean Air Programme (2019)
Maps, Data and Geospatial Techniques
- Maps and Map Scale — maps from ancient times (Babylonian clay tablets, Ptolemy, Indian traditions) - Survey of India (1767) - digital maps
- Latitude, Longitude and Time — Greenwich Prime Meridian (1884) - Indian Standard Time (82°30'E)
- Map Projections — Mercator (1569) and later projections
- Topographical Maps: Relief Representation and Interpretation — Survey of India topographic sheets (Open Series Maps and Defence Series Maps)
- Remote Sensing, GIS and GNSS — aerial photography - Landsat (1972) - IRS-1A (1988) - Bhuvan and NavIC; National Geospatial Policy (2022)
- Geographical Data: Sources, Compilation and Processing — Census of India (since 1872), NSS (since 1950), present-day data portals
- Graphical Representation of Data and Thematic Maps — present-day cartographic practice