EARTHQUAKE

INTRODUCTION :-

Earthquake (also called as Quake , Tremor , Temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earths lithosphere that creates seismic waves ....

            PICTURE OF FORMATION OF EARTHQUAKE

FOCUS :-

          Point of origin of earthquake or a subsurface nuclear explosion ....

EPICENTER :-

           Point of the Earth surface directly above a focus ....

                          SEISMIC WAVES :-

   Seismic waves are waves of energy that travel through the earth's layers and are a result of earthquakes , volcanic eruptions etc . Seismic waves fields are recorded by a SEISMOMETER , HYDROPHONE ...

TYPES OF SEISMIC WAVES :-

     These are classified into 2 types ...

1. Body waves

2. Surface waves

             EARTHQUAKE ZONES OF INDIA :-

    The Indian subcontinent has a history of devastating earthquake ... The major reason for the high frequency and intensity of the earthquake is that the Indian plate is driving into Asia at a rate of approx 47mm per year ... Geographical statistics of India show that almost 54% of the land is vulnerable to earthquakes ...

          Diagram illustrates that ZONES OF EARTHQUAKE IN INDIA .....