Insta Profile - https://www.instagram.com/hrsht.dwivedi English Version - https://youtu.be/e_yooBuwWi4 Continental Drift Theory 1912 By Alfred Wegener Explained - https://www.youtube.com/watch?v=_BnE8wqXD3k Seafloor Spreading Theory by Harry H Hess & Contraction Theory Explained - https://www.youtube.com/watch?v=irrP5G-Smqk Plate Tectonics Theory, Major Tectonic Plates, Rings of Fire, San Andreas Fault - https://www.youtube.com/watch?v=PxyJ1mkstDI Why Tsunami Waves Larger at the Coast - https://www.youtube.com/watch?v=mGOq4Zx93cg First of all I have explained what hypocenter, focus and epicenter are. Then I have explained the methodology of how an earthquake and tsunami occurs. Please watch the video to know more about occurrence of Earthquakes and Tsunamis.