TNPSC

Political History of Tamil Nadu Compared with rest of India, Tamil Nadu has had a healthy administrative and political culture, more or less stable economic life, and continuity of traditions from the hoary past to the present. Madras Presidency of South India came into existence due to the administrative and political needs of the British. […]

Introduction On an average, 232 million people are affected by different types of disasters every year. In recent years disaster risks have been on the rise due to factors such as population growth, unplanned urbanization, environmental degradation, conflicts and competition for scarce resources, climate change, disease epidemics, poverty and pressure from development within high-risk zones.

Introduction The earth was formed 4.6 billion years ago. Geographers are concerned about the earth and its various spheres. These spheres did not exist on the primitive earth as they are today. They evolved over a long period of time after the earth was formed. There was no life on earth for a very long

Introduction You must have heard people, in the countryside, saying “When sheep collect and huddle, Tomorrow will puddle!” “If ants march in a straight line, expect rain” Phrases like ‘a cold morning’, ‘sunny day’, ‘cloudy day’ and rainy day refer to the weather. Weather refers to the state of atmosphere at a particular place at

Introduction “World cannot survive without water and morality cannot exist without rain” As thirukkural quotes, water is the most important resource in the world. Over 90% of the world’s supply of fresh water is in Antarctica. You must know that 85% of the world population lives in the driest half of the planet. Now we

Introduction Let’s recall that you have learned in the previous chapter about geomorphic processes – Endogenic processes in detail. Now we deal with the exogenic processes. The forces which act on the earth’s exterior are called as exogenic forces or external forces. The action of exogenic forces results in wearing down the rock and hence,

Introduction Do you know that the Russians tried to dig through the centre of the Earth? It indeed is a daring attempt. While the famous Voyager 1 satellite took 26 years to exit our Solar System (16.5 billion km away), almost the same amount of time (24 years) was taken for man to dig out

Introduction Human geography refers to the study of ways of development of human societies and their operation in relation to their physical environment. This chapter focuses on the distribution, characteristics and utilisation of different resources in Tamil Nadu. We have studied earlier that the earth is endowed with a variety of natural resources such as

Introduction The study of one’s own region is the first step to become a global citizen. The purpose of studying our local territory is to understand life in our environment. In the last five lessons, you have learnt about various geographical characterstics of our country. In this lesson and those that follow, we shall learn

Introduction The study on human population is one of the most important aspects in geography of any region. The human population has many components but the most fundamental are its number, composition, distribution and density. Therefore, it is essential to study these components. The study on these aspects also would reveal the workforce of the