Category: World Geography

Landforms and their evolution

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Landforms and their evolution Landforms are the natural process of the earth’s surface that includes mountains, hills, plateaus, and plains. Landforms consist of their own physical shape, size, and materials. These are the results of certain geomorphic processes and agents. Landforms may change their shape, size, and nature after their formation as a result of the continued action of geomorphic processes and agents. Evolution of Landforms: It implies stages of transformation of either a part of the earth’s surface from one landform into another or the transformation of individual landforms…

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Important Lakes of the World

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Important Lakes of the World- lake superior

Important Lakes of the World: Lake is a body of water surrounded by land. Lakes are water bodies with slow-moving, or standing water that are occupied in an inland basin. Here we discuss some important lakes all over the world with their continent, basin countries, area, and maximum depth. List of important lakes of the world Many lakes are found all over the world that are important in their aspects; a list of important lakes in the world is given below: Caspian Sea: (An Oceanic lake- also called Mazandaran Sea,…

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Major rivers of the world

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Major rivers of the world

Major rivers of the world Major rivers of the world, their sources and countries in the drainage system, and the destination in which they empty are favorite topics of exams like UPSC, State PCS, and others exams. In the given table the list of major rivers of the world is provided: Name of river Source, and Countries in the drainage system Empty in Nile river (The longest river in the world) Lake Tana (Blue Nile), and Lake Victoria (White Nile) The main countries in the drainage basin are Tanzania, Uganda,…

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The Solar System

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Planets in Our Solar System

The Solar System The solar system is a family of the Sun along with eight major planets, dwarf planets (Ex. Pluto), satellites, asteroids, Moons, meteors, and comets. All these orbit the sun to form the Solar System. Sun is our motherly and nearest star, which creates energy from nuclear reactions deep within the interior, by its light and heat life is possible on Earth. Origin of Solar System: The solar system formed 4.6 (4.568) billion years ago from the gravitational collapse of a giant interstellar molecular cloud. Bodies close to…

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SEAFLOOR SPREADING

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seafloor spreading

Seafloor Spreading The concept of seafloor spreading was proposed by Harry Hammond Hess in 1961 (an American geologist). He discovered the mid-Atlantic ridges i.e. mid-ocean ridges. It is a geologic process in which tectonic plates splits apart from each other. The process of seafloor spreading occurs at mid-oceanic ridges, in which a new oceanic crust is formed through volcanic activities and then gradually moves away from the ridges. Some Important evidence for seafloor spreading: Along the mid-oceanic ridges, volcanic eruptions are common and they bring huge amounts of lava to…

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Atmosphere: Composition and Structure

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Layers of Atmosphere

Atmosphere: Composition and Structure Atmosphere of Earth The atmosphere is an envelope of gases surrounding the earth, these gases are commonly called air. The air is one of the necessary conditions for the existence of life on the planet. The atmosphere of Earth protects life on Earth. The atmosphere is a mixture of gases that is odourless, colourless, tasteless, and formless, blended so thoroughly that it behaves like a single gas. It contains life-giving gases like Oxygen for humans and animals for breathing and life support and Carbon di Oxide…

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Clouds- Definition and Classification

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Clouds- Definition and Classification

Clouds- Definition and Classification Cloud is a visible, Dense mass of suspended water droplets or ice crystals, or Particles suspended in the air. Clouds are formed when air is forced to rise at a front, over mountains, or because of convection. The formation of cloud is a result of saturation of air when it is cooled to its dew point, or when it gains sufficient moisture from an adjacent source to raise the dew point to the ambient temperature. (You can read the water cycle). Types of Clouds: Luke Howard…

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List of Important Local Winds

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List of local winds

List of Important Local Winds local winds blow over a limited area. They are caused due to influence of local pressure gradient and terrain. The local winds blow between small, low, and high-pressure systems. These winds are influenced by local geographical conditions like distance from the ocean, lake, or mountain range, all these factors affect local winds. List of some important Local winds of the world: Name Place Characteristics Bora Adriatic Coast (A body of water separating the Italian Peninsula from the Balkans) These are Cold, Gusty, North-easterly from eastern…

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Plate Tectonics

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Plate tectonics

Plate Tectonics Plate tectonics: The term was first coined by JT Wilson in 1965. After the evolution of the concept of the “continental drift hypothesis” and “seafloor spreading” a broader concept of “plate tectonics” was developed in 1967. The theory of Plate Tectonics was introduced independently by McKenzie, Parker, Morgan, and Holmes in 1967. Theory of Plate Tectonics Plate tectonic theory states that the dynamics of the earth’s outer shell, the lithosphere are separated into plates that move over the asthenosphere, the upper molten portion of the mantle. Oceanic and…

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Earthquakes- definition, related facts

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Earthquakes- definition, related facts

Earthquakes (also called quakes, tremors, or temblors) A sudden movement of Earth’s crust is caused by the release of stress accumulated along geologic faults or by volcanic activity. In simple words, the earthquake refers to the shaking of the earth. Mainly it is a natural event caused due to release of energy and generates waves that travel in all directions. We can say that an earthquake is a series of shocks and tremors resulting from the sudden release of pressure along active faults and in areas of volcanic activity. Important…

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