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JustTeach
A-LeveL GeoGrAphy resource FiLe
A-Level Geograph y Resourc e F i l e
Natural Hazards
Simon Ross Tim Bayliss Lawrence Collins
crossAcademe
Natural Hazards
Topic 1 Recent trends in natural hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Earthquakes
Topic 2 Distribution and causes of earthquakes. .…read more

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Ha za rdS
To p i c
1 Lesson ideas for teachers
Considering the big picture
With a rapidly growing population, the world's exposure to natural hazards is inevitably
increasing. This is particularly true in coastal areas, where greater exposure to floods,
tropical cyclones and tsunamis is coupled with the fastest population growth. In addition,
any land remaining available for urban growth is generally risk-prone, for example flood
plains or steep slopes vulnerable to landslides.…read more

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Ha za rdS
To p i c
1 Lesson ideas for teachers
(continued)
Student activities
1 There are lots of possible questions that can be considered:
What is the meaning of `events'?
Is it really likely that the number of earthquake events is increasing?
Why is the line for `All disasters' increasing so dramatically?
2 Why do floods and cyclones cause more disasters than earthquakes?
Students will hopefully use this graph to raise all sorts of issues themselves.…read more

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Ha za rdS
To p i c
1 Lesson ideas for teachers
(continued)
Impact of climate change
Resource 4 considers the possible impacts of climate change on the Ferghana Valley
in Central Asia. It seems likely that climate change will have an effect on the spatial
distribution and intensity of natural events, such as storms, floods and droughts. Some
parts of the world may become more at risk from natural disasters in the future.…read more

Page 6

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To p i c
RE C EN T TRE N DS IN N ATUR AL Ha z ardS
1
1
Resou rc e
Trends in the number of reported
hazard events, 1900­2000
Number of events
per year
450 Trends in number of reported events
Much of the increase in the number of
All disasters
400 hazardous events reported is probably
due to significant improvements in
information access and also to population
350 All disasters include: growth, but the number of floods and
drought, earthquake, cyclones…read more

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To p i c
RE C EN T TRE N DS IN N ATUR AL Ha z ardS
2
1
Resou rc e
Global variations in natural disasters,
1974­2003
H
Disaster Distributed
frequency
H
L-M
Total number
0­30 31­120 121­500
of disasters
Source: EM-DAT ­ the OFDA/CRED International Disaster Database
L
Disaster
Bipolar
fatalities
affected
L
M-H
Deaths and persons affected per 100,000 inhabitants
0­1000 1001­ 5000 5000 +
Source: EM-DAT ­ the OFDA/CRED International Disaster Database
JustTeachNatural HazardsLicensed to: © Cross Academe Limited 2012…read more

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To p i c
RE C EN T TRE N DS IN N ATUR AL Ha z ardS
3
1
Resou rc e
Global natural catastrophes, 2009
Hazard location Geophysical events Hydrological events
(earthquake, tsunami, (flood, mass movement)
Costliest/deadliest events volcanic eruption)
Climatological events
Meteorological events (extreme temperature, drought,
(storm) forest fire)
JustTeachNatural HazardsLicensed to: © Cross Academe Limited 2012 6…read more

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To p i c
RE C EN T TRE N DS IN N ATUR AL Ha z ardS
4
1
Resou rc e
Possible impact of climate change on
natural hazards: the Ferghana Valley
Topography 0 km 200
Lowlands and piedmont areas
Mountainous regions (above 1500 metres) Potential impacts of climate change
Desertification Rapid melting of
Hydrometeorological hazards (deserts, semi-arid, and glaciers and ice caps
Risk of flooding arid lands expansion) Changes in snow
Risk of mudflows and landslides Changes in productivity cover, permafrost,
and…read more

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Ha za rdS
To p i c
1 Student questions
Trends in disasters
1 Study Resource 1.
aCompare the trends for `Earthquakes' and `All disasters' (1900­2000).
bSuggest reasons for the differences you have observed.
cSuggest the likely changes for both lines to 2010.
2 Suggest reasons why disasters caused by floods and cyclones have increased more
rapidly than for earthquakes.
Global patterns
3 Study the disaster frequency map in Resource 2.
aIdentify some of the countries that experienced the greatest number of disasters
(1974­2003).…read more

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