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Extreme Natural Events. Focusing questions. What are extreme natural events and where and how often do they occur? What are the natural and cultural features of the environments that make them vulnerable to earthquakes? What natural processes are involved in the formation of earthquakes?

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Presentation Transcript

Focusing questions
Focusing questions

  • What are extreme natural events and where and how often do they occur?

  • What are the natural and cultural features of the environments that make them vulnerable to earthquakes?

  • What natural processes are involved in the formation of earthquakes?

  • What effects do earthquakes have on land and the people?

  • How have different groups of people responded to the effects of earthquakes?


Brainstorm
Brainstorm

  • How many extreme natural events can you think of?

  • How may these be categorised?

  • Use the A-Z template in teams.


Video clips
Video clips

http://www.youtube.com/watch?v=l_8hOai9hGQ


Key terms
Key Terms

  • Extreme natural event : An abnormally severe natural event, like a storm, flood, tropical cyclone, landslide or tsunami.

  • Natural event : Any event that is caused by natural processes.

  • Natural disaster : An extreme natural event that affects people.

  • Natural hazard : an extreme natural event which could threaten people.


Natural processes

A natural event is the result of a series of related actions known as processes. Rainfall processes for example, include evaporation, condensation and precipitation.

Natural processes


  • Extreme Natural

  • Event

Human use of an area

Intersection


Classification of extreme natural events
Classification of Extreme natural events found at the intersection of the diagram.

  • Duration of the event. Some may last for years (eg. coastal erosion) while others are over in a few seconds. (eg. An earthquake)

  • Frequency of the event. Some may occur many times a year (eg. Storms) while others may occur only once every 500 years (eg. earthquake)


Classification of extreme natural events ctd
Classification of Extreme natural events ctd.. found at the intersection of the diagram.

3. Damage caused. Some extreme natural events cause a lot of damage and death (eg. a cyclone) while others cause very little damage & are rarely life-threatening (eg. A frost)

4. The area affected. Some extreme natural events affect huge areas (eg. A tsunami) while others may affect only a few hectares (eg. hail)



Activities
Activities events.

  • Construct a pie graph of the world’s extreme natural events.


World pattern of extreme natural events
World pattern of extreme natural events events.

  • Use an atlas to help you complete a world map showing the pattern of extreme natural events.

  • Complete activity sheet on world patterns.


Personal key
Personal Key events.

  • Choose an extreme natural event that you have either experienced or studied. Describe your thoughts and feelings about this event.



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