Isothermal Lines

Isothermal Lines The “isothermal process”, which is thermodynamic process in which the temperature of a system remains constant. The transfer of heat into or out of the system happens so slowly that thermal equilibrium is maintained. “Thermal” is a term that describes the heat of a system. “Iso” means “equal”, so “isothermal” means “equal heat”, … Read more Isothermal Lines

Housing in India

Housing in India Issues related to housing sector in India Un-planned growth of settlements  A number of housing clusters have mushroomed in and around various metropolitan centres in haphazard and unplanned manner, without a proper layout and devoid of service lines and other essential facilities. These unauthorized developments are encroachments on land parcels belonging to … Read more Housing in India

World Climate:- Climate and seasons, distribution of rain fall and climatic regions

World Climate:- Climate and seasons, distribution of rain fall and climatic regions Climates and seasons Different parts of the world have different climates. Some parts of the world are hot and rainy nearly every day. They have a tropical wet climate. Others are cold and snow-covered most of the year. They have a polar climate. … Read more World Climate:- Climate and seasons, distribution of rain fall and climatic regions


Grassland Grassland, area in which the vegetation is dominated by a nearly continuous cover of grasses. Grasslands occur in environments conducive to the growth of this plant cover but not to that of taller plants, particularly trees and shrubs. The factors preventing establishment of such taller, woody vegetation are varied. Grasslands are one of the … Read more Grassland


Mountains Mountain, landform that rises prominently above its surroundings, generally exhibiting steep slopes, a relatively confined summit area, and considerable local relief. Mountains generally are understood to be larger than hills, but the term has no standardized geological meaning. Very rarely do mountains occur individually. In most cases, they are found in elongated ranges or … Read more Mountains


 Earth’s Rotation and Revolution Primarily two motions: Rotation and Revolution. Rotation of Earth Earth rotates along its axis from west to east. It takes approximately 24 hrs to complete on rotation. Days and nights occur due to rotation of the earth. The circle that divides the day from night on the globe is … Read more ROTATION OF EARTH

Solar Energy

 Solar Energy : Source, Solar heating devices, solar cooker solar cell   Sunlight is Earth’s most abundant energy source and is delivered free of charge. Indeed, the energy from sunlight reaching the land surface of the earth  is thousands of times greater than the world’s current total annual consumption of energy. Yet harnessing sunlight’s energy … Read more Solar Energy

Hydrological Cycle

 Hydrological Cycle Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff. Although the total amount of water within the cycle remains essentially constant, its distribution … Read more Hydrological Cycle