GEOGRAPHY FOR UPSC Arundeep Karnati
WHAT IS GEOGRAPHY? Home for many other creatures EARTH Surface is not uniform Variations in its physical features
WHAT IS GEOGRAPHY? Geography is the description of the eartlh Geo (earth) and graphos (description Eratosthenese The description of the earth as the abode of human beings Greek scholar (276-194 BC.)
GEOGRAPHY? Geography is concerned with the description and explanation of the areal differentiation of the earth's surface. -Richard Hartshorne Geography studies the differences of phenomena usually related in different parts of the earth's surface. -Hettner
Is baar pakka hojayega! Indian Geography and World Geography UPSC Syllabus NCERT
ORIGIN EVOLUTION OF THE EARTH
CAN YOU SEE STARS? Earth How many stars are there in the sky? How did they come into existence? Can one reach the end of the sky?
Large number of hypotheses were put forth by different philosophers and scientists regarding the Origin of the earth
Earth originated from cold gaseous cloud, which eventually started spinning and became hot. With increase in speed, rings were separated from the central mass (sun) and planets were formed. Gaseous hypothesis Immanuel Kant The hypothesis considered that the planets were formed out of a cloud of material associated with a youthful sun, which was slowly rotating. Nebular hypothesis Laplace Otto Schmidt in Russia and Carl Weizascar in Germany
Wandering star approached the sun. As a result, a cigar-shaped extension of material was separated from the solar surface. As the passing star moved away, the material separated from the solar surface continued to revolve around the sun and it slowly condensed into planets Chamberlain and Moulton Binary hypothesis We agree with Chamberlain and Moulton Sir James Jeans and Sir Harold Jeffrey
Origin of the earth Earth originated from cold gaseous cloud, which eventually started spinning and become hot. With increase in speed, rings were separated from the central mass (sun) and plonets were tormed. Wandering stor approached the sun. As a result, a cigar-shaped extension of material was separated from the solar surface. As the pessing star moved away, the material separated from the solar surface continued to revolve around the sun and it slowly Gaseous hypothesis Chamberlain and Moulton Immanuel Kant The hypothesis considdered that the planets were formed out of a clouel of moterial associated with a youthful sun, which was slowly rotating. Binary hypothesis We agree with Chamberlain and Moulton Laplace Sir James Jeans and Sir Harold Jeffrey Omo Schide in Rusua and Corl EARLY THEORIES
Big Bang Theory Expanding universe hypothesis Origin of the Universe Edwin Hubble 1. In the beginning, all matter forming the universe existed in one place in the form of a iny ball" (singuler atom) with an unimaginably small volume, infinite temperature and infinite density. 2. At the Big Bang the "iny bal" exploded violently. This led to a huge expansion. It is now generally accepted that the event of big bang took place 13.7 billion years before the present. The expansion continues even to the present day. As it grew, some energy was converted into matter. There was particularly rapid expansion within fractions of a second after the bang. Thereafter, the expansion has slowed down. Within first three minutes from the Big Bang event, the first atom began to form. 3. Within 300,000 years from the Big Bang, temperature dropped to 4,500 K (Kelvin) and gave rise to atomic matter. The universe became transparent
About me 291.3k views Arundeep Karnati Educanor since April 2017 Engineer by force, MBA by Passion, Teaching by love making creotive stulf, Video edting 10.3k 30 17 Hyderabad, India Engineering and MBA. Worked for MNCs & Startups. Interests: Research, Digital marketing, Designing, presentations, Movies etc All courses (17) MCQ Series for Prelims 2019 41k ews 5months ago Rate, Review and recommend Follow me: https://unacademv.com/user/arundeep19 Arundeep Karnati 92 MCQ Series for Prelims 2019-July 2018 Arundeep Kamat 239 Current Events of National and LG
Engineer by force, MBA by Passion, Teaching by love. making creative stuff, Video editing...