Natural Disasters
Some of the natural Disasters that have a huge impact on the mankind are: Earthquakes An earthquake is a sudden tremor or movement of the earth’s crust, which usually originates at or below the surface. The outer layer of the earth is solid and is divided into many sections known as plates. These plates, float over the molten magma that flows beneath the earth’s crust. Many of the earthquakes occur on the edges of these plates along fault lines where the plates collide or try to slide past each other. Apart from natural causes like the movement of the Earth’s tectonic plates and volcanic eruptions, there are other man-made causes of earthquakes. These include vibrations caused by big rocks falling down hills because of erosion, hollow parts of mines falling down due to dissolution of minerals by water and, in the present times, due to nuclear explosions. The point of origin of the earthquake within the crust or mantle is called the seismic focus. Since the focus is ofte...