APSC Mains 2024 Notes
Get topicwise printed notes for APSC Mains Exam 2024 developed by experienced faculty of PSCNOTES.APSC Prelims and Mains Notes, APSC Test Series
The continental drift theory is the theory that once all the continents were joined in a super-continent, which scientists call Pangaea. Over a vast period of time, the continents drifted apart to their current locations. Alfred Wegener first supported continental drift. Wegener’s explanation of continental drift in 1912 was that drifting occurred because of … Read more Continental Drift Theory – Tectonics
The uppermost outer solid and rigid layer of the earth is called crust. Its thickness varies considerably. It is as little as 5 km thick beneath the oceans at some places but under some mountain ranges it extends upto a depth of 700km. Below the crust denser rocks are found, known as mantle crust. … Read more Plate tectonics