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KHURSHED ALAM AKAND

Presented By. KHURSHED ALAM AKAND. B. A. ( Hons ), M. A. ( Bangla ). Senior Assistant Teacher. Kaniz Fatema Girls’ School, Manikganj. Mobile : 01191312900. E-mail : khurshed.akand@yahoo.com. Today’s Lesson. The Natural Disaster In Bangladesh. Chapter : 14. Subject : Social Science.

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KHURSHED ALAM AKAND

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  1. Presented By KHURSHED ALAM AKAND B. A. (Hons), M. A. (Bangla) Senior Assistant Teacher KanizFatema Girls’ School, Manikganj. Mobile : 01191312900 E-mail : khurshed.akand@yahoo.com

  2. Today’s Lesson The Natural Disaster In Bangladesh Chapter : 14 Subject : Social Science Class : Six

  3. Define DISASTERUsing The Following Clues : • Any natural or man made phenomena. • Causes serious damage to the property • and the economy of the affected area. • Makes the entire environment totally • catastrophic. • In short, the normal flow of life faces • interruption.

  4. DISASTER • Natural Disaster • Man made Disaster War Earthquake

  5. Examples of natural disaster: Cyclone& Tidal surge River erosion Earthquake Cold wave Drought Tornado Flood

  6. Cyclone has so long snatched away millions of lives and the properties worth billions of taka.

  7. Flood is created when sudden flow of water crosses normal limit and swamps the two sides of rivers. Flood causes havoc to houses, roads and crops.

  8. The spiral movement of river and flood are congenial for river erosion. Numerous people living in the riverside areas of Padma, Meghna, Jamuna and Brahmaputra become landless and homeless because of river erosion.

  9. Abnormally low rainfall and excessive evaporation of water from soil during summer season bring drought. Drought causes damage to crops, hampers irrigation and agricultural production seriously.

  10. Cold wave is originated due to violent blow of winter-wind. It brings death to some people.

  11. Earthquake is felt due to sudden commotion on earth and earth surface and different reasons that happen in the inner earth.

  12. Tidal surge originates right under the centre of cyclone. The furious wind velocity swells the agitated sheet of water and transforms it into tidal surge.

  13. Group Work 1. How does the disaster seen in the right hand side picture originate and what damages does it cause? 2. Mention the cause and effect of the disaster shown in the left hand side picture.

  14. Evaluation 1. What is disaster? 2. How many types of disaster arethere? What are they? 3. What is natural disaster? 4. Give examples of natural disaster in Bangladesh.

  15. Home Work Determine the relation between flood and river erosion in Bangladesh.

  16. THANK YOU

  17. Learning Outcomes At the end of the lesson, the learners will be able to- • Define disaster with classification • Define natural disaster with example • Explain the causes and effects of • different natural disasters in • Bangladesh.

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