World Geography

What is Geography?

In very simple words “Geography is the description of the earth”. Eratosthenes, a 3rd century BC Greek scholar coined the term geography (from “geo” meaning “the earth” and “graphe” meaning “the description”). Thus, the literal meaning of geography is to describe the earth. Geography is concerned with the study of nature and human interaction. The geographical …

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Demographic Transition Theory

Demographic Transition Theory in its original form was propounded by Warren Thompson and Frank Wallace Notestein. The theory postulates of a special pattern of demographic transformation high fertility and high mortality to low fertility and low mortality, when society progresses from a dominantly rural, agrarian and illiterate society to a predominantly urban, industrial and literate society. These changes occur …

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Malthus Theory of Population

The British economist and demographer Thomas Robert Malthus undoubtedly was the first scholar two propound a population theory based on scientific and natural law. His book on the principles of population growth was published in 1798. Malthus traveled various West European countries and collected many important data in support of his population theory. Thus, the Malthus theory of Population was …

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Population Problems of Developed Countries

The developed countries of the world are highly industrialized and urbanized. These countries include West European countries (UK, France, Germany, Netherlands, Iceland, Ireland, Belgium, etc.) European Russia, USA, Canada, Japan, Australia, and New Zealand. In these countries per capita income is very high in comparison to developing countries and most of their people are dependent on …

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Stages of Economic Growth by Rostow

Walt Whitman Rostow, propounded his theory of economic growth dealing with the stages of economic growth. He made an effort to correlate the process of economic growth to the growth of population and common social and political features of the growth process. According to Rostow, the economic growth occurs in five basic stages, of varying …

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Landslide

A large mass of bedrock or regolith sliding downhill is known as a landslide. Large, disastrous landslides are possible wherever mountain slopes are steep. Landslides can also result when the base of a slope is made too steep by excavation or river erosion. Landslides range from rockslides of jumbled bedrock fragments to bedrock slumps in which …

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Urban Heat Island

An urban heat island is an urban area or metropolitan area that is significantly warmer than its surrounding rural areas due to human activities. The temperature difference is usually larger at night than during the day, and is most apparent when winds are weak. Air temperatures in the central region of a city are typically …

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Jet Streams

Jet streams are wind streams that reach great speeds in narrow zones at a high altitude. They occur where atmospheric pressure gradients are strong. Along a jet stream, the air moves in pulses along broadly curving tracks. The greatest wind speeds occur in the center of the jet stream, with velocities decreasing away from it. …

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Underpopulation

Concept of underpopulation is just the opposite of overpopulation. Underpopulation occurs when the population of an area is too small for full utilization of its resources. The condition of under-population may also appear when the resources of an area can support a larger than the existing population without lowering the standard of living or without creating any type …

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