If we throw stone in a pond of still water, series of waves are produced on the surface of water, similarly intensity of earth quack is spread.

1.        If we throw stone in a pond of still water, series of waves are produced on the surface of water, similarly intensity of earth quack is spread. Similarly, any sudden disturbances in the earth’s crust may produce vibration because of environmental variation in the crust which moves in all direction to make trouble the people. People have to face great trouble which live near the point of disturbance because of intensive movement. Those which are on great disturbances do not have to face the huge loss because of slow movement.  Greater the distance from point of disturbance lesser will be losses of property and lives.