• A disaster is a sudden calamity that A disaster is a sudden calamity that may cause displacement of a great may cause displacement of a great number of people living or working in number of people living or working in an area.an area.

• The term displacement also The term displacement also includes deaths, loss of live hood includes deaths, loss of live hood property & human suffering all of property & human suffering all of which are the result of disaster.which are the result of disaster.

TYPE OF DISASTERTYPE OF DISASTER

• Disaster can broadly be divided into Disaster can broadly be divided into two group as follow; two group as follow;

• NATURAL DISASTER.NATURAL DISASTER.• MANMADE DISASTER.MANMADE DISASTER.

• A disaster causes destruction of natural , A disaster causes destruction of natural , resources, life & property. As a result, the resources, life & property. As a result, the normal functioning of the society is normal functioning of the society is disrupted. disrupted.

• The magnitude of disaster depends on the The magnitude of disaster depends on the density of population in the affected area .density of population in the affected area .

• An important environmental consequence An important environmental consequence of a disaster is the damage to an ecosystem of a disaster is the damage to an ecosystem by pollution of rivers, ground water, dust & by pollution of rivers, ground water, dust & heat in atmosphere .heat in atmosphere .

• CYCLONES ; cyclones develop as moisture CYCLONES ; cyclones develop as moisture evaporates from warm oceans in the lowlatitudes evaporates from warm oceans in the lowlatitudes during the hottest months of the year.during the hottest months of the year.

• EARTH QUAKE ;earthquake are vibrations produced EARTH QUAKE ;earthquake are vibrations produced in the earth’s crust.in the earth’s crust.

• DROUGHT ;the term drought refers to a long period DROUGHT ;the term drought refers to a long period of time when there is little or no rain.of time when there is little or no rain.

• LANDSLIDES; landslides is a descent of a mass of LANDSLIDES; landslides is a descent of a mass of and down a mountain slope.and down a mountain slope.

• FLOOD ;flood occur when the waters of rivers, FLOOD ;flood occur when the waters of rivers, lakes ,or streams overflow their banks and pour out lakes ,or streams overflow their banks and pour out onto the surrounding land.onto the surrounding land.