How Earthquake occurs and what causes it | Seismic Waves | P and S Waves

This video is on how earthquake occurs, how it is formed and what are its causes. The study of seismic waves provides a complete picture of the layered interior. Why does the earth shake? What are P and S waves? What are surface waves and body waves? What are propagation of earthquake waves? #earthquake #ncertgeography #upsc Video of Dr. Keith Miller demonstrating P & S waves https://goo.gl/SQypKg Fill this feedback form for a better learning experience https://goo.gl/vrYPBw Click here if you want to subscribe    / therealsengupta