CBSE Revision Notes

Class 11 Geography Chapter 1 India: Location Notes

CBSE Class 11 Geography Chapter 1 India: Location Notes

When asked by then Prime Minister Indira Gandhi, “How does India look from the space?” “Saare Jahaan Se Accha (best in the world)” was the reply of the first Indian cosmonaut Rakesh Sharma. India does look beautiful from up there. It has a crown-like Kashmir, Bay of Bengal in the East, the Arabian Sea in West and Adam’s bridge (Rama-Setu bridge) in South. Let’s understand in details the size and location of India. Please refer Class 11 Geography Chapter 1 India: Location Notes for more information.

Fundamentals of Physical Geography Class 11 Notes

CBSE Notes for Fundamentals of Physical Geography Class 11

The Fundamentals of Physical Geography website is designed to be a free online textbook for University and College students studying introductory Physical Geography. Version 1.0 of Fundamentals of Physical Geography contains over three hundred pages of information and more than four hundred 2-D illustrations, photographs, and animated graphics. Besides having the traditional text and 2-D graphics, this information source also has a number of animated graphics, an interactive glossary of terms, a study guide, web pages with links to other Internet resources related to Physical Geography, and a search engine to find information on the Fundamentals of Physical Geography website. Please refer Fundamentals of Physical Geography Class 11 Notes for more information.

Fundamentals of Physical Geography Class 11 Notes

Class 11 Geography Chapter 16 Biodiversity and Conversation Notes

CBSE Class 11 Geography Chapter 16 Biodiversity and Conversation Notes

Biodiversity is the variation of life forms, within a given ecosystem, biome or for the entire earth. It is a combination of two words; bio meaning life and diversity meaning variety. It refers to the varieties of plants, animals and micro-organisms, the genes they contain and the ecosystems they form. Differences in biodiversity of one place from another are due to the environmental conditions of an area and the range of tolerance of the species. Please refer Class 11 Geography Chapter 16 Biodiversity and Conversation Notes for more information.

Class 11 Geography Chapter 15 Life on the Earth Notes

CBSE Class 11 Geography Chapter 15 Life on the Earth Notes

Ecology is the study of the interaction of organisms with their physical environment and with each other. Ecosystem on the other hand is the system consisting of biotic as well as abiotic components. Biotic components include the producers, the consumers and the decomposers, while the abiotic factors include factors like, rainfall, sunlight, temperature, humidity, etc. Ecosystems are of two types: terrestrial ecosystem and aquatic ecosystem.

Terrestrial ecosystem can further be classified into biomes. A biome is a plant and animal community that covers a large geographical area. Biomes are demarcated on the basis of climatic cha aracteristics. There are basically five types of biomes. These are: forest biome, desert biome, grassland biome, aquatic biome and altitudinal biome. Please refer Class 11 Geography Chapter 15 Life on the Earth Notes for more information.

Class 11 Geography Chapter 14 Movements of Ocean Water Notes

CBSE Class 11 Geography Chapter 14 Movements of Ocean Water Notes

Approximately 71% of the earth’s surface is covered by oceans, which are dynamic in nature. Oceans are considered as a potential resource of food, minerals and power. It is significant for trade and navigation. Ocean water is dynamic. There are two types of movements in water bodies— horizontal and vertical. Its movement is influenced by temperature, salinity, density and the external forces like sun, moon and winds.
The ocean currents and waves are in horizontal motion. The vertical motion refers to the tides. Waves are the undulations formed on the surface of water bodies like river, sea and ocean. Waves are produced by wind pu ushing the water towards the shore. The periodical rise and fall of the oceanic water is called tides. It is due to the attraction of Sun and Moon, once or twice in a day. Please refer Class 11 Geography Chapter 14 Movements of Ocean Water Notes for more information.

Class 11 Geography Chapter 13 Water (Oceans) Notes

CBSE Class 11 Geography Chapter 13 Water (Oceans) Notes

Water is a cyclic resource. It can be used and re-used. The hydrological cycle, is the circulation of water within the earth’s hydrosphere in different forms i.e. the liquid, solid and the gaseous phases. Please refer Class 11 Geography Chapter 13 Water (Oceans) Notes for more information.

Class 11 Geography Chapter 12 World Climate and Climate Change Notes

CBSE Class 11 Geography Chapter 12 World Climate and Climate Change Notes

The most widely used classification of climate is the empirical climate classification scheme developed by V. Koeppen in 1918, and modified over a period of time. The scheme was based on the mean annual and mean monthly temperature and precipitation data. Koeppen classified the climate into six major climatic groups; five of them are based on temperature and one on precipitation. These are: A-Tropical B-Dry Climates C-Warm Temperate D-Cold Snow Forest Climates E-Cold Climates H-High Land The climatic groups are subdivided into types, designated by small letters, based on seasonality of precipitation and temperature characteristics. Please refer Class 11 Geography Chapter 12 World Climate and Climate Change Notes for more information.

Class 11 Geography Chapter 11Water in the Atmosphere Notes

CBSE Class 11 Geography Chapter 11Water in the Atmosphere Notes

Humanities/Arts : Revision Notes – Water in the Atmosphere, Class 11, Geography.Water is present in the atmosphere in three forms namely – gaseous, liquid and solid. The moisture in the atmosphere is derived from water bodies through evaporation and from plants through transpiration. Please refer Class 11 Geography Chapter 11Water in the Atmosphere Notes for more information.

Class 11 Geography Chapter 10 Atmospheric Circulation and Weather Systems Notes

CBSE Class 11 Geography Chapter 10 Atmospheric Circulation and Weather Systems Notes

Atmospheric Pressure is the weight of a column of air contained in a unit area from the mean sea level to the top of the atmosphere. Atmospheric Pressure is measured by an instrument called ‘barometer’. Atmospheric Pressure is expressed in the units of Millibars and Pascal. Pressure belts are unstable. They oscillate with the movement of the Sun.

The forces, which affect the velocity and direction of the wind, are: Pressure Gradient Force Frictional Force and, Coriolis Force Pattern of the movement of planetary winds depends on: Latitudinal variation of atmospheric heating Emergence of pressure belts Migration of belts following apparent path of the Sun Distribution of continents and oceans Rotation of the earth Movements of air repetitively and predictably, driven by changes in the weather patterns are called seasonal winds. Differential heating and cooling of the earth’s surface can create several local or regional winds. Please refer Class 11 Geography Chapter 10 Atmospheric Circulation and Weather Systems Notes for more information.

Class 11 Geography Chapter 9 Solar Radiation, Heat Balance and Temperature Notes

CBSE Class 11 Geography Chapter 9 Solar Radiation, Heat Balance and Temperature Notes

Insolation is the energy received by the earth as the incoming solar radiation. The amount of solar radiation received at a place during a particular time is determined by the factors like: The rotation of earth on its axis The angle of inclination of the Sunrays The length of the day The transparency of the atmosphere The configuration of land in terms of its aspects The earth radiates back the heat received through insolation through the processes of Conduction Convection and Advection The earth maintains a balance between the incoming solar heat and the outgoing terrestrial radiation, which is known as the heat budget of the earth. In the absence of this, the earth would have been excessively warmer or excessively cooler. Please refer Class 11 Geography Chapter 9 Solar Radiation, Heat Balance and Temperature Notes for more information.