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 Read more…
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 Read more…
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, Read more…
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 Read more…
List of Important Glaciers of Himalayan mountain The Glaciers are reservoirs of freshwater. They are formed from a mass of compacted recrystallized snow with the ability to flow. In simple words, a glacier is a huge mass of ice that moves slowly over land. As per National Snow & Ice Read more…
List of main volcanoes in the world (For UPSC and other exams) Volcanos are landforms created by the accumulation of solidified lava and volcanic detritus from the earth’s crust. The list of main volcanos in the world and their features are given in the table. (for details about volcanoes- Must Read more…
Volcanoes: Definition, Types, & Facts Volcanoes referred to landforms created by the accumulation of solidified lava and volcanic detritus near the vent. In simple words, a volcano is a rupture in the crust of a planetary-mass object, like Earth, by which hot lava, gases, and volcanic ash escape from the Read more…
Continental Drift Theory Continental Drift Theory: Abraham Ortelius first put forward the speculation that the continent might have ‘drifted’ in 1596. The first comprehensive and fully developed Continental Drift Theory was proposed by a German meteorologist, Alfred Wegener in 1912. Alfred Wegener was the first person who used the phrase Read more…
Metamorphic rocks – Types and Characteristics Introduction: Metamorphic rocks are formed by the transformation of pre-existing rocks (igneous, sedimentary) to a new type of rock and then followed by the process called metamorphism. The pre-existing rock is subjected to high temperatures (greater than 150 to 200 °C), and high pressure, Read more…
Sedimentary rocks Sedimentary rocks are a type of rock formed by the accumulation or deposition of organic particles or minerals and their consolidation at the earth’s surface. The whole process of formation of these rocks is called sedimentation. Types of Sedimentary Rocks These rocks are of the following types: Argillaceous Read more…