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Geography unit 1: The World at Risk

Lesson 1.

Global Hazards.

What are the main types of physical risks facing the world & how big a threat are they?

Physical risks facing the world today are...

Global warming.
Climate change.
Flooding ­ sea level rise.

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Both of these will lead to global environmental change.

Hydro-meteorological Geophysical
Hurricane Earthquake
Drought Tsunami
Flooding Mudslide

How a hazard becomes a disaster.

If a hazard happens & significantly effects vulnerable humans it is a disaster.


Lesson 2.

Specific risks from global hazards.

Decreasing in severity…

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Risk = number of hazards times vulnerability over capacity to cope.

The risk of disaster grows as global hazards & peoples vulnerability increases, while their
capacity to cope decreases.
LEDC's are more at risk than MEDC's as their capacity to cope is lower & their vulnerablility is
It's important…

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happens because most land mass is in the north, meaning more trees photosynthesis at a
certain time than in the south.
This is happening because an increase in global population means there is a greater demand
for fossil fuels, goods & other things.
Also with many countries GDP increasing means…

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Melt ware from retreating glaciers causes devastating floods in the Himalayas.
95% of coral reefs are killed.

Lesson 5.

Why LEDC's will be more adversely affected by natural disasters?

Poor infrastructure. When they collapse easier resulting in death, & also allowing less access
for help.
Lack of warning systems e.g.…


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