Physical hazards
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Physical Hazards PowerPoint PPT Presentation


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Physical Hazards. IB SL. Intro. There is an extremely wide range of natural hazards, some of which are increased due to the actions of man. It is important that for your exam you are able to relate to named examples to show understanding of the topics you have covered.

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Physical Hazards

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Physical hazards

Physical Hazards

IB SL


Intro

Intro

  • There is an extremely wide range of natural hazards, some of which are increased due to the actions of man.

  • It is important that for your exam you are able to relate to named examples to show understanding of the topics you have covered.


Physical hazards include

Physical Hazards Include...

  • Earthquakes.

  • Volcanic explosions.

  • Flooding.

  • Drought.

  • Tropical storms.

  • Landslides.


Linkages

Linkages

  • There are obvious links between hazards, for example, a hurricane may cause flooding, whist a volcanic eruption may lead to a landslide.


Human vs physical

Human Vs Physical

  • In order for a physical event or process, such as an earthquake to be hazardous there must be the potential for some loss of life.

  • For example, there are some uninhabited volcanic islands, if they erupt they are not strictly hazardous as no loss of life occurs.


Impact of hazards

Impact Of Hazards

  • It is generally felt that that the less developed a country (LEDC) is the more damage, both economically and in terms of loss of life the hazard causes.


Impact of hazards1

Impact Of Hazards


Human activity

Human Activity

  • The general rule is that the more people there are and the more vulnerable they are to a disaster the greater its impact will be.

  • Impacts of hazards can be increased by human activity.

  • For example, heavy rainfall is more likely to lead to flooding if vegetation has been removed from hill slopes.

  • Many people in Bangladesh choose to live in the low-lying Ganges Delta as it provides good farming land, but it is the area most vulnerable to flooding.


Activity

Activity

Look at the Hazard Classification Card Sort Worksheet and categorise them in terms of…

  • Most devastating Effects (People/Human).

  • Most devastating Effects (Environment).

  • Types (Weather Related).

  • Human Caused and Naturally Caused.

  • Any other ideas???


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