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 Read more…
Major straits of the world What is Strait? A strait is a naturally formed, narrow, typically navigable waterway that connects two larger bodies of water. Most commonly it is a channel of water that lies between two landmasses. Some straits are not navigable, for example, because they are too shallow, Read more…
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 Read more…
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…
