Flooding in bangladesh_outlinePresentation Transcript
Flooding in Bangladesh Assessment Task:You are a photo editor for a news organiza>on who is pu?ng together a presenta>on on the causes, eﬀects and responses to ﬂooding in Bangladesh. You will be concentra>ng on one par>cular ﬂood event in 1998.There SHOULD be more than one photo for each sec>on.Each photo has to have a cap>on that describes and explains the relevance of the photo. “Bangladesh in mainly low lying ﬂat land with 80% being I.e. it should not be – here is a picture of ﬂat less than 6 meters above sea level. This means when rivers ﬂood it covers a large area of land. land, it should be: Source: www.mrpiersiscoolandhisphotosaregreat.com What are the Causes, Eﬀects and Responses to Flooding in Bangladesh.
Physical Causes of Flooding When cyclones form, the Bengal Bay acts as a funnel for >dal waves and strong winds.Since 80% of Bangladesh is Bangladesh has a monsoon only about 6 metres above climate, and over 80% of it’s sea level, it ﬂoods very rain occurs in May‐ September, easily. the monsoon period. 2
During the spring melt in the Himalayas, a lot of water comes into the three main rivers and over ﬂows them.One big cause of ﬂooding in Since the period of heavy rain Bangladesh is the three major is the same as the highest rivers leading into it‐ the temperatures, it combines with Brahputma, Ganges, and the mel>ng snow.Meghna rivers. 3
Human Causes of Flooding Sea levels are rising quickly because of global warming. If all the ice caps melt, Bangladesh will no longer be above water. Bangladesh is very Trees soak up water prevent overpopulated, so there is a ﬂoods, but if they are cut higher demand for homes down it increases ﬂooding. and things like wood, leading to more deforesta>on.
Case Study 1998 Floods •
Primary Eﬀects Houses are destroyed in ﬂoods, leaving thousands of people homeless.Animals die because their Small children or people that owners cannot aﬀord to can’t swim drown very easily feed them or from water‐ during ﬂoods. borne diseases. 6
Snakes have hide in small places where you can’t see them in ﬂoods, causing hundreds of people die from snakebites in Bangladesh.Since ﬂood water is always People take advantage of dirty, water‐borne diseases the monsoon season to such as diarrhea are very grow rice, but ﬂoods will common. destroy them if they are saturated in water.
Secondary Eﬀects People are forced to live on the streets if their homes are destroyed. Ruined crops and dying With no crops to sell, people in animals lead to food Bangladesh become poor.shortages and hunger. 8
Responses to FloodingThe Bangladesh Vegetable seeds are handed government gives out food out so people can grow their packs regularly. own crops. Animals are >ed up to stop them running away in panic.
Long Term Responses to Flooding Concrete shelters are also built. To keep water out, they are designed to have legs four metres above the ground.Walls are being built to keep Roads are improved to make out the water. evacua>on easier.