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

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Видео How Earthquake occurs and what causes it | Seismic Waves | P and S Waves канала Amit Sengupta