Tnpsc and Upsc Notes Pdf
The measurement of the degree of hotness or coldness of ocean water is referred to as ocean temperature. Temperature is normally measured in the units of degrees Celsius by thermometers. The major source of heat energy for ocean water is the radiation from the sun. Just like land, the ocean’s water gets heated up by … Read more
International date line and its coordinates Definition It is an imaginary line dividing the surface of the earth, which runs from the North Pole to the South Pole and demarcates the border between one calendar day and the next. It serves as the “line of demarcation” between the two calendar days. Prime meridian Is the … Read more
Some of the Most famous volcanoes in Iceland Most famous volcanoes in Iceland is Eyjafjallajokull because of its eruption in 2010. Other famous volcanoes are Katla, Öræfajökull, Bárðarbunga etc. Mount Hekla has erupted 18 times, the last time it erupted was in 2000. Iceland volcanoes names Iceland has a large concentration of active volcanoes, as … Read more
The ocean has great depressions features. The oceans are similar to continents that merge into one another and it is difficult to demarcate them. The oceans are divided by Geographers as Pacific, Atlantic, Indian, Southern Ocean, and the Arctic. These oceans consist of various seas, bays, gulfs, and other inlets. A major part of the … Read more
Cyclone Disaster management Cyclone disaster management is most important, as cyclone affects coastal India maximum than any other. India has a coastline of about 7516 km and it is exposed to 10% of the world’s tropical cyclones. In India, ten states are vulnerable to flood-prone. They are Gujarat, Maharashtra, Goa, Karnataka, Kerala, Tamil Nadu, Pondicherry, … Read more
What are Population Age Pyramids? Population pyramids are graphical representations of the age and sex of a population. Due to this reason, it is also referred to as age-sex pyramids. These graphs are usually shaped like triangles and population pyramids also take other shapes. Population pyramids usually have males on the left side and females … Read more
Literacy Rate The total number of literate people in a given age group is expressed as a percentage of the total population in that age group. Literacy rates continue to rise from one generation to the next. According to new data from the UNESCO Institute for Statistics, there are still 750 million illiterate adults, and … Read more
Causes of Migration We can divide factors causing migrations into two groups of factors as push and pull factors. Push and Pull factors Push and pull factors are those factors that either forcefully push people into migration or attract them. A push factor is forceful, and a factor that relates to the country from which … Read more
Migration Migration means the movement of people from one place to the other. It is an important control of population growth after fertility and mortality. Migration of people into an area from outside is called immigration or in-migration while moving out of an area to other regions is called emigration or out-migration. Immigration leads to … Read more
Effects of overpopulation on the environment Depletion of Natural Resources The human population keeps increasing, exhaustible natural resources such as arable land, coral reefs, freshwater, fossil fuels, and forests continue to drop sharply. This creates competitive demand for vital life-sustaining resources and contributes to an incredible decline in the quality of life. Accelerated Habitat Loss … Read more