Notes and Study material for Exams
Flood and Drought Occurrence Drought Drought is a complex, slow-onset phenomenon of ecological challenge that affects people more than any other natural hazards by causing serious economic, social and environmental losses in both developing and developed countries. The period of unusual dryness (i.e. drought) is a normal feature of the Climate and weather … Read more
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
Problems of Soil erosion and degradation in Maharashtra Konkan Region This region is located between 1;044′ and 20°20′ N lat. and 700 10′ and 730 50′ E long. with a longitudinal distance of 500 krns and a width of 15-20 kms. It comprises of four districts, namely Sindhudurg, Ratnagiri, Thane and Raigad. The … Read more
Pressure and wind belts Atmospheric Pressure, also called barometric pressure, force per unit area exerted by an atmospheric column (that is, the entire body of air above the specified area). Atmospheric pressure can be measured with a mercury barometer (hence the commonly used synonym barometric pressure), which indicates the height of a column … Read more
Physical and social Environment as factors of crop distribution and production Physical Factors Climatic factors Climatic factors includes temperature, growing season, altitude, rainfall and wind. Most Plants cannot grow if the temperature falls below 6°C or the Soil is frozen for five consecutive months. As a consequence many areas are unsuitable for crop … Read more
Oceanic Resources of India and their potential Oceans are the world’s single largest ecosystem, covering nearly three-fourths of the earth’s surface, thereby providing a massive arena for emerging complex and interconnected development issues such as Climate change, livelihoods, commerce, and security. According to estimates by the Global Ocean Commission, ocean resources contribute five … Read more
Marine Resources – Economic significance and EEZ Economic significance of Marine Resources Marine energy Marine energy or marine power (also sometimes referred to as ocean energy, ocean power, or marine and hydrokinetic energy) refers to the energy carried by ocean waves, tides, salinity, and ocean temperature differences. The movement of water in the … Read more
Soil fertility depleted, the rivers polluted and the forests destroyed. The Indian Scenario India constitutes 18 per cent of the world’s Population, 15 per cent of the live stock population and only 2 per cent of the geographic area, one per cent of the forest area and 0.5 per cent of pasture lands. … Read more
Glaciers Glaciers are made up of fallen snow that, over many years, compresses into large, thickened ice masses. Glaciers form when snow remains in one location long enough to transform into ice. What makes glaciers unique is their ability to move. Due to sheer mass, glaciers flow like very slow rivers. Some glaciers … Read more
Evolution and Geomorphology of the Indian Subcontinent About 140 million years ago the main landmass on Earth was concentrated together in a super continent called Gondwana which started to break up in four tectonic plates; African, Antarctic, Australian and Indian plates. The rifting is thought to be caused by the rising of a … Read more