Example model answers 2013

Example model answers 2013
SECTION A: RIVERS & COASTS
“Name a river where flooding is managed. Describe and explain the causes of river floods
here and how the flooding is managed. Explain how sustainable these methods
are.Include at least three developed ideas.”
The River Derwent flows through Cockermouth and is located in Cumbria, England and
suffered flooding in 2009 and 2012. In 2009, floods were caused by excessive relief rainfall
due to the area being mountainous – over 500mm of rain was received in a month, with
315mm falling in just 48hours in some areas. Cockermouth is located at the confluence of
two rivers, and is downstream from hilly relief. As a result, when the rivers were overflowing
due to high rainfall there was very little infiltration and a lot of surface runoff so
Cockermouth received double the usual discharge and the rivers burst their banks. The
floods were also caused by human factors such as urbanisation and building on floodplains
which increased the amount of impermeable soils and led to more surface runoff. The
results of the floods led to 1300 residents being evacuated and without electricity, as well
has their homes being damaged. 4 bridges were destroyed and one killed a police officer.
The river had risen over 1.5metres to burst its bank and the insurance claim to repair the
buildings and the area exceeded £100million in damages.
Since the floods, various flood management strategies have been introduced in the area.
The rivers were dredged and cleared of debris to increase the depth of the channel and
reduce the chance of overflowing. Flood levees have been built around Cockermouth and
the river banks raised here. Bridges have been rebuilt and strengthened at the base to
withstand potential flooding. There is an improved monitoring of the river to allow better
warnings next time and evacuate residents. Residents are also prepared through having
sandbags and flood doors in their homes to reduce flood damage. Trees have been planted
on upload slopes to increase interception which will reduce surface run-off and increase lag
time so that the rivers do not fill so quickly and overflow. Also, building on floodplains has
been reduced or removed so that soils are not so impermeable. Overall these strategies are
quite sustainable since they balance the economic cost of management with the value of
the land and properties being protected. Some residents may consider flood walls and
levees to be unattractive however they will protect homes and businesses and so will be
socially sustainable. And afforestation and clearing river drainage channels is
environmentally sustainable since it improves how a river flows without using hard
engineering which is unnatural.
“Name an area of coastline.Describe how the coastline is protected from erosion. To what
extent are these protection methods sustainable?”
Highcliffe and Barton-on-Sea are two stretches of coastline alongside each other on the
south coast of England. Highcliffe is located in Dorset, whereas Barton is located in
Hampshire. The two councils have chosen to manage their areas of coastline differently,
although both areas face the same threat from the sea and are formed of the same geology.
The area is a mix of soft clay and sands which makes the rocks less resistant and vulnerable
to erosion, particularly hydraulic action from waves. There is also transportation through
longshore drift occurring which is removing sediment from west to east and reducing the
size of the beaches.

At Highcliffe, the land is considered more valuable due to the high resident population and
high property values. As a result, the council has spent money to ‘hold the line’ and reduce
the impact of erosion and transportation. In the 1950s, the coastline was retreating inland
at a rate of up to 2metres per year, and since then various strategies have been put in place.
There is hard and soft engineering. Hard engineering includes rock armour, cliff reshaping
and sea walls. These all serve to reduce the impact of hydraulic action and attrition in
particular, by reducing wave energy reaching the beach and protecting the cliff. Rock
groynes are in place to reduce the impact of longshore drift by retaining sediment. Beaches
are the best natural protection against erosion as they increase friction as waves travel over
them, so it is important and more sustainable to maintain beaches. Beach replenishment
has also been used to increase the size of the beach. This is considered aesthetically
pleasing however it is very expensive and not long-lasting. It is environmentally sustainable
in terms of maintaining the size of the beach and increasing friction, it is socially sustainable
by providing a recreation area and visual attraction, but it is economically unsustainable
since it is not long lasting and must be replaced. Groynes are more economically sustainable
however they may be considered environmentally unsustainable downcoast since these
beaches are starved of sediment. This can be seen at Barton which is starved now due to
Chewton Bunnygroyne.
At Barton-on-Sea, the council decided the land was less valuable (since it only has a
campsite and no permanent dwellings) and so chose managed retreat as their management
strategy. This allows the sea to reclaim the land until a balance is found. The beach was
already being starved from the defences at Highcliffe and Hengistbury Head so it was
considered not economically sustainable to attempt to maintain Barton. Since 1930, over
80m of cliff has suffered rotational slumping and retreated inland. But this is considered
successful since it is economically sustainable, it has a minimal impact socially since there
are no residents, and in the long run would prove more environmentally sustainable by
allowing a natural balance to be found.
SECTION B: ECONOMIC DEVELOPMENT
“For a multinational company (MNC) you have studied, describe and explain how the
company affects local people and the environment and the overall economy.”
Coca Cola is an MNC located in India. It is a secondary manufacturing industry, producing
bottled Coca Cola drink. It is located in India due to cheap labour costs, skilled workforce
and less restricted environmental law.
Local people are affected by being given employment. Coca Cola employs over 125’000
people in India. India is an LEDC and employment from MNCs can help improve the
development of the area because with more people in employment there is more tax being
paid to the government and more money being spent on local services to support shops and
farms etc. . Coca Cola also invested $1billion on infrastructure improvements like roads,
electricity, healthcare and services. This is all useful for local people and improves their
quality of life and standard of living.
The environment is affected more negatively. Coca Cola uses 3litres of water for every 1litre
of bottled drink produced. This water is extracted from underground in India. Because
environmental laws are less strict in India Coca Cola is allowed to over extract too much
water. As a result, Kerala village loses 100’000 litres of water a day. This is negative for the

environment and local people who lose water they need to water crops and for everyday
washing and cooking water. They cannot afford to pay for the water since Coca Cola can
drive up prices. Also, in Rajahstan the water table has dropped over 10m because of too
much water being extracted. This can lead to dry soils and desertification which makes
growing crops difficult.
The overall economy would improve in some ways because of Coca Cola employing local
people who then earn more income which they can spend locally and on taxes which means
there is more investment in the area. However, because Coca Cola is an MNC it has its
headquarters overseas in the USA which means that most profits are sent here. India
receives some benefits such as investment and improved infrastructure and employment,
but most money is sent back to the USA.
“For an aid programme you have studied, describe the features of the aid programme and
evaluate how sustainable it is.”
Goat aid is an aid programme which has been used in Tanzania, and LEDC in Africa. The
project is run by Oxfam and people raise money for this charity to support goat aid. A family
is given a pair of goats (or a small flock) as an aid investment. They can then use these goats
to improve their quality of life and standard of living.
Goats can be bred and the flock increased, this gives the family more status and the goats
are valuable and can be used for trade. Goats can be used for their milk and meat which
improves the diet of the family and can help improve their health. If they are healthier then
they can work harder and longer on other jobs and improve their income. Goat fur and skin
can also be used for clothing and for homes. Over time, by breeding the goats into a flock a
family can then trade them and improve their income. This income can be used to support
the children by providing money for clothing and education, this improves their chances of
being able to learn skills for other paid employment and improve their future.
As a by-product, goat manure can be used to fertilise the soils and improve the quality of
soil for agriculture. This improves crop production which can also be sold for an income or
used to improve the family diet.
If goats are donated to young girls or families with young girls then this can help with the
‘girl effect’ – that girls will be more respected and have an income to support themselves
and so not be forced into prostitution, so improving their chances in life and reducing the
spread of disease or increased birth rate.
One problem with goats is that they need a lot of food, and have a tendency to eat
everything. This can lead to overgrazing where goats eat too many plants, this leaves soil
exposed and it becomes eroded and windblown which causes desertification. Families need
to ensure they can afford to pay to feed goats and pay for any medication they need.
Overall, goat aid is one of the most sustainable types of aid because it is cyclical and can be
maintained by breeding goats for sale, meat and milk. The money can be constantly

reinvested to improve chances for children and by improving their health and education it
means they will get a better job in future and keep reinvesting in the area.
SECTION C: HAZARDS
“For a natural hazard event you have studied, state where the hazard is located. Describe
the causes of the hazard and the effects. Using specific detail, describe the measures of
hazard protection in this area and evaluate how successful these methods are.”
Iceland is an MEDC located on the mid-Atlantic ridge north of the UK. It is a small volcanic
island with a history of many volcanic eruptions at regular intervals. In 2010 there was an
eruption at the Eyjafjallajokull (E-15) volcano under a glacier. The eruption was caused by
this:
1) The earth’s core is hot and needs to radiate out heat to cool down
2) This causes the mantle to convect or churn around under heat and pressure
3) As the mantle convects, it causes the tectonic plates of the earth’s crust to move and
to collide or separate.
4) As these plates move, they cause earthquakes and volcanic eruptions.
Iceland is on the mid-Atlantic ridge which is a divergent plate. These means the tectonic
plates are moving away from each other. The Eurasian and North American plates are
moving apart and as they do this allows magma to come to the surface and be erupted. E-15
is a volcanic area located under a glacier on a divergent plate. As the plates moved apart,
magma came to the surface and a fissure eruption of lava occurred in April 2010. The
eruption was quite small in terms of lava produced, but because the lava mixed with the
glacier melt water it caused a huge ash cloud column up to 30’000ft in the air. This ash
mixed with the atmosphere and winds blew it south and across Europe.
The effects in Iceland were minor. Nobody died, a few farm animals suffered respiratory
problems. 150m thickness of ice was melted which caused a large jokulhlaup flood which
destroyed some bridges on the main road Route 1 and made transport difficult. Homes
were evacuated and covered in ash. 20 farms were destroyed which means a loss of income
for localpeople. However, tourism to Iceland and within the eruption area increased as
people travelled to see the eruption.
The worst effects were felt in Europe and for businesses here. One of the secondary effects
was the ash cloud as it spread across Europe and because of the height of the ash airports
had to close and flights were cancelled. 95000 flights were cancelled with thousands of
‘volcano refugees’ stranded. Airlines lost $2billion due to cancellations, and London itself
lost £102million in lost tourism. Many people missed holidays or social events and were
forced to pay extra to get home. However, they used social sites like Twitter, Facebook and
google search to actually find people and find their way home.
Because Iceland has a lot of experience with hazards it is well prepared and has many
measurement systems in place. The island has a huge network of seismometers to measure
ground shaking, they also have satellite imagery and tiltmeters to measure the shape of
volcanoes and see if magma is travelling to the surface. Gas chromatography is used to see

if sulphur dioxide or CO2 is increasing in soil and water as this shows volcanic activity. All of
this can be used with computer modelling to predict eruptions. Icelandic people can sign up
to receive text message alerts about eruptions, and there is a good network of radio, tv and
internet warnings. Because it is an MEDC there is the infrastructure in place for evacuation
plans and specialist services like the emergency services know what to do in the event. As a
result, loss of life is minimal. In an LEDC (like Haiti during the 2010 earthquake) this is not
possible due to costs and so the warnings are less likely.
“For a natural hazard you have studied, explain the processes that caused this event and
the effects of it. Explain how levels of development can affect the impact of a hazard.”
In 2010 Haiti, in the Caribbean, suffered a 7.0 Richter earthquake. Haiti is an LEDC and one
of the poorest countries in the world. The earthquake epicentre was only 25km from the
capital city and because the tremor was shallow in the ground it caused massive damage
here.
The earthquake was caused when the transform faults of the North American and
Caribbean tectonic plates slipped past each other. Tectonic plates are slabs of the earth’s
crust that are floating on the mantle. The mantle is constantly convecting (churning around)
because of the heat radiating out from the core. As the mantle convects, the plates above it
move and collide or move apart. Transform faults are when two plates are sliding past each
other and they rub together, creating friction. This friction and pressure builds up stress
between the plates until the stress is too great and the plates snap to release this pressure,
one plate will jolt forward and this is the shaking we feel as earthquakes.
The effects of the Haiti earthquake were very serious. Social effects included the destruction
of 250’000 homes (with people losing property and possessions as well as valued homes).
230’000 people died, a huge number. This is because Haiti is an LEDC and so many housing
areas are incredibly overpopulated and crowded with poor quality low strength buildings
that collapse easily. Also, the earthquake resulted in lots of stagnant water with rats or dead
bodies in it which led to the spread of diseases like cholera or dysenteryand diarrhoea which
killed more people, this is unusual in MEDCs because the emergency services remove
stagnant water quickly and provide medicines. Haiti had to request $160million in aid, and
received only $80million so could not afford a very effective response. Temporary shelters
were provided and short term aid like food and water, but these shelters still had 1.5million
refugees in them over a year later as so many people (500’000) were made homeless. When
Japan, an MEDC, suffered a massive earthquake and tsunami in 2011 the government was
slightly more prepared, and responded to the event more effectively. Even though the
tsunami and earthquake were huge, the seismometers in place gave some warnings. Also,
Japanese people are drilled in how to respond to earthquakes and know how to evacuate.
The emergency services are well organised and perform search and rescue practices so they
were quicker at rescuing people. Also, the government provided more stable temporary
housing (mobile homes) with electricity and services which stopped the spread of disease
and other problems. 15’000 people did die, which is a very high number for an MEDC, but
this was due to the sheer scale of the tsunami and earthquake. In Iceland, another MEDC,
nobody died during the volcanic eruption of 2010 and this was helped by the fact that
Iceland has a network of seismometers and computer modelling based on volcanic gas

emissions or the shape of the volcano. This means that people are warned in advance (via
tv, radio, internet and text message) to evacuate an area and this reduces loss of life.
The level of development has a huge effect on the impact of a hazard. Generally, LEDCs
suffer higher loss of life but lower loss of money and the buildings can be rebuilt more
quickly. This is due to poor building quality, overcrowding in shanty towns, people being
possibly of poorer health due to inadequate diet, the spread of disease in crowded areas
with stagnant water and slower response by emergency services and government. In
MEDCs, they have access to better infrastructure such as building quality. In Japan, there are
strict regulations on earthquake proof buildings. These have features such as reinforced
concrete foundationsand roofs, TMB balance counterweights on the roof to counter the
tremors and help the building sway safely, shatterproof glass with automatic window
shutters, ballbearing or rubber foundations to cushion the tremors, etc. All of these are
successful but expensive, and not accessible for LEDCs like Haiti.

Example model answers 2013

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Example model answers 2013