Geography

Batholiths A large body of magmatic material that cools in the deeper depth of the crust develops in the form of large domes. They appear on the surface only after the denudational processes remove the overlying materials. They cover large areas, and at times, assume depth that may be several km. These are granitic bodies. … Read more

. In winter months, the weather conditions over India are generally influenced by the distribution of pressure in Central and Western Asia. A high pressure centre in the region lying to the north of the Himalayas develops during winter. This centre of high pressure gives rise to the flow of air at the low level … Read more

The Matching of Continents (Jig-Saw-Fit) The shorelines of Africa and South America facing each other have a remarkable and unmistakable match. It may be noted that a map produced using a computer programme to find the best fit of the Atlantic margin was presented by Bullard in 1964. It proved to be quite perfect. The … Read more

Some air movements are the result of the systematic pressure gradients that arise from latitudinal changes in the Earth’s surface temperature. One notable example is the Hadley Cell, a movement of warm air from the tropics that rises, flows toward the poles and then cools and sinks at around 30 degrees north and south of … Read more

An air mass is a large volume of air in the atmosphere that is mostly uniform in temperature and moisture. Air masses can extend thousands of kilometers across the surface of the Earth, and can reach from ground level to the stratosphere—16 kilometers (10 miles) into the atmosphere. The climates of most regions worldwide are … Read more

Atal Tunnel is the longest highway tunnel in the World. The 9.02 Km long tunnel connects Manali to Lahaul-Spiti valley throughout the year. Earlier the valley was cut off for about 6 months each year owing to heavy snowfall. The Tunnel is built with ultra-modern specifications in the Pir Panjal range of Himalayas at an … Read more

Krishna-Godavari (KG) basin, an excellent source of fuel methane Methane hydrate deposits in this basin are a rich source that will ensure adequate supplies of methane, a natural gas The study using molecular and culturing techniques revealed maximum methanogenic diversity in the KG basin, which is one of the prominent reasons to confirm it to … Read more

Tropical Monsoon Tropical monsoon climates are most found in southern Asia and West Africa. A monsoon is a wind system that reverses its direction every six months. Monsoons usually flow from sea to land in the summer, and from land to sea in the winter. Summer monsoons bring large amounts of rainfall to tropical monsoon … Read more

 Unlike durable crops such as cereals, pulses and oilseeds, fresh fruits and vegetables are highly perishable, and must be marketed immediately after harvesting without primary processing. Fruit and vegetables generate large quantities of valuable waste that ends up as garbage.  However, if they are gainfully utilized at the proper time they can become … Read more

The world is entering in the twenty-first century so that every sector of the economy should prepare itself to face the challenges of the coming century. There will be need to produce more than what is being produced and there would be greater demand for food, fiber and other commodities. The land area is limited … Read more