Main objective of this lecture is to present on Earthquakes. Earthquakes are a result of motion within the earth. This only occurs where the earth is solid and therefore can only occur within about 100 miles of the surface. Earthquakes provide the best evidence regarding the interior structure of the Earth. Tidal waves or Tsunamis result when a large section of the sea floor suddenly moves and therefore displaces a massive amount of water.
Presentation on Earthquakes
