Notes and Study material for Exams
Introduction to Continents and Ocean Basins Continents and ocean basins being fundamental relief features of the globe are considered as ‘relief features of the first order’. It is, therefore, desirable to inquire into their mode of possible origin and evolution. Different views, concepts, hypotheses and theories regarding the origin of the continents and ocean basins … Read more
Earthquakes occur when energy stored in elastically strained rocks is suddenly released. This release of energy causes intense ground shaking in the area near the source of the earthquake and sends waves of elastic energy, called seismic waves, throughout the Earth. Earthquakes can be generated by bomb blasts, volcanic eruptions, sudden volume changes in … Read more
Natural hazards are severe and extreme weather and Climate events that occur naturally in all parts of the world, although some regions are more vulnerable to certain hazards than others. Natural hazards become natural disasters when people’s lives and livelihoods are destroyed.Chattishgarh is vulnerable to cyclonic storm, Flood and Draught. Cyclone and flood disaster in Chattishgarh Chattishgarh is very vulnerable to … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> : Types, distribution and their impact:- Earthquake:- The study of seismic waves provides a complete picture of the layered interior. An earthquake in simple words is shaking of the earth. It is a natural event. It is caused due to release of energy, which generates waves … Read more
Shales are fine-grained Sedimentary Rocks formed of organic-rich mud at the bottom of ancient seas.Subsequent sedimentation and the resultant heat and pressure transformed the mud into shale and also produced natural gas from the organic matter contained in it. Over long spans of geologic time, some of the gas migrated to adjacent sandstones and was trapped in … Read more
Earthquakes and INFRASTRUCTURE, and it can also cause landslides and liquefaction. Tsunamis, which are large waves caused by earthquakes, can also cause widespread damage. Volcanoes are formed when magma, or molten rock, rises to the surface of the Earth. Magma can rise to the surface through cracks in the Earth’s crust, or it can erupt … Read more
Rajasthan: Natural Hazards Types of Disasters and Disaster Risks in the State:- Types of Disasters : Disasters are broadly categorized as Natural and Man-made Natural Disasters are of several types, e.g. related to :- (i) Drought (ii) Floods (iii) Earthquake (iv) Fire (including lightening) (v) Cloudburst (vi) Landslides (vii) Hailstorms … Read more
Andhra Pradesh is exposed to INFRASTRUCTURE and economic activities along the coast. Lack of proper maintenance of the flood protection and Irrigation systems, drains, embankments etc., The major impact of cyclones can be broadly categorised as below: Loss of lives, injuries and other Health consequences such as epidemics, and post traumatic Stress disorders (PTSD) … Read more
Most of the knowledge we have about Earth’s deep interior comes from the fact that seismic waves penetrate the Earth and are recorded on the other side. Earthquake ray paths and arrival times are more complex than illustrated in the animations, because velocity in the Earth does not simply increase with depth. Velocities generally … Read more
The Unseen Forces: Exploring Endogenic Processes and Their Impact on Earth The Earth, a dynamic and ever-changing planet, is a testament to the interplay of internal and external forces. While the sun’s energy and atmospheric processes drive the external forces, the Earth’s own internal heat and pressure fuel the endogenic processes. These processes, often hidden … Read more