Tnpsc and Upsc Notes Pdf
Rock cycle and Types of rocks The rock cycle is a continuous process by which the old rocks are transformed into a new one. The changes are caused by various chemical and physical processes. There are three major types of rocks and they are igneous rocks, sedimentary rocks, and metamorphic rocks. Rocks The earth’s crust … Read more
Minerals and rocks The earth is made of different kinds of elements and these elements are in solid form in the outer layer and hot and molten form in the interior of the earth. Around 98% of the total crust of the earth is composed of eight elements: Oxygen – 46.6%, Silicon- 27.72%, Aluminium – … Read more
The Earth’s radius is 6370 km. It is practically impossible to reach the centre of the Earth and conduct research on it. Due to this scientists and engineers are collecting information on the Interior of the Earth based on estimates and inferences from various sources arising from the Earth. These estimations are classified as Direct … Read more
Indian Standard Time IST that is Indian Standard Time is calculated from 82°30’E meridian passing through Mirzapur. Thereby Indian Standard time is +5.30 Hours from the GMT. Longitude and Time The time of any region or country is calculated based on the longitude of the earth. The earth rotates from west to east, which makes … Read more
Physical Geography Solar System Earth Latitude and Longitude Motions of Earth – Rotation, Revolution, Inclination of Earth Axis Local and Standard Time International Date Line, Calendar Eclipses Interior of the Earth Source of Information – Direct, Indirect – Earth Quakes Volcanoes, crust, mantle, core etc Rocks Rocks & landform & Soils Rock Cycle – Types … Read more
Rotation and revolution of earth Earth has two types of Motions. They are Rotation and Revolution. Rotation is the movement of the earth on its axis. Earth takes 24 hours for one rotation around its axis. This period of rotation is known as Earthday. Revolution is the movement of the earth around the sun in … Read more
This post is for the topic of thunderstorms and lightning Upsc. Lightning is an atmospheric electrostatic discharge (spark) accompanied by thunder, which typically occurs during thunderstorms, and sometimes during volcanic eruptions or dust storms. Lightning generates 10-20 ampere current dangers for people in an open area. Lightning strikes often have fatal consequences. On average, 2000 … Read more
Drought in India Drought is a period of time (months or years) during which a part of the land has a shortage of rain, causing severe damage to the soil, crops, animals, and people. It sometimes causes even death. During drought high temperature is experienced and such conditions may affect our health. The primary cause … Read more
Flood disaster management upsc Flood destruction has always brought misery to numerous people, especially in rural areas. Flood results in the outbreak of serious epidemics, especially malaria and cholera. Simultaneously, the scarcity of water also arises. It has a drastic effect on agricultural produce. Sometimes, water remains standing over large areas for a long span … Read more
Landslide Landslide definition A landslide is defined as the movement of a mass of rock debris down a slope. Landslides are caused by the direct influence of gravity. Landslides can be caused by rainfall, snowmelt, stream erosion, flood, earthquakes, volcanic activity, disturbance by human activities, or any combination of these factors. Landslides cause property damage, … Read more