Section A
Answer one question from this section.
1
|
(a)
|
Study Figs 1, 2 and 3 (Insert), which show
information about Arenal volcano in Costa Rica, Central America.
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(i)
|
Use Figs 1 and 2 to help you show how both the
location of, and the volcanic activity at, Arenal volcano are a result of
plate tectonics. [5]
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5@1m
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(ii)
|
Use the information on Fig. 3 to suggest
ways in which tourists and local people have benefited from developments
around Arenal volcano. [4]
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Hotels development e.g. Arenal
Lodge, Tabacon Lodge to look at the beauty of a volcano
Health tourism … spa and
resort near the Tabacon Lodge
Dam built to create a
reservoir at Lake Arenal … help local people to have more water
Area becomes more accessible …
footpaths that lead to the top of Arenal volcano to look at volcanic
activity; like the lodges with the ranger station and park entrance
Development of alternative
transport e.g. water taxi / dock to bring people to look at Lake Arenal
4@1m
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(iii)
|
Use Fig. 3 to help you explain why volcanoes
are dangerous and why different risk areas are designated around the
volcano. [4]
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||||
Different risk areas
designated e.g. R1 to R3
4@1m
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(b)
|
Explain slab-pull force and its influence on
plate movement. [4]
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·
Tremendous heat
found in the Earth’s interior causes rocks in the mantle to melt and become
magma.
·
Magma in the mantle is heated, expands and rises. The rising magma
spreads out below the plate, cools and sinks.
·
Continuous heating and cooling of the magma in the mantle causes a
circular movement known as the convection current.
4@1m
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(c)
|
‘Preparedness measures are the most
effective in coping with threats from earthquakes.’ To what extent is this true? Give reasons for your answer. [8]
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Preparedness measures:
Landuse regulations
Building design
Infrastructure development
Emergency drills
Use of technology e.g.
earthquake monitoring and warning systems
When earthquake happens, there
are short-term responses
Searching and rescuing
casualties
Providing food, water and
medical care
Setting up emergency shelters
Calling for humanitarian aid
Post-earthquake responses
Ensuring affected area/region
recovers economically
Improving the health options
Compensating people who lose
their land and property
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2
|
(a)
|
Study Fig. 4, which shows stages in the
formation of a tsunami.
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Use the information on Fig. 4 to explain the
formation of a tsunami and the changing height of the waves as they approach
the shore. [5]
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5@1m
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(b)
|
Describe how tsunamis are monitored and
explain how this may reduce their impact on people. [4]
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4@1m
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(c)
|
Study Fig. 5, which shows sea level changes.
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(i)
|
Describe the changes from 1850 to 2010. [4]
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4@1m
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(ii)
|
Suggest reasons for both the changes and
range in the projections of sea levels between 2010 and 2100. [4]
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·
Increase in deforestation where trees are cleared to
have land for mining activities, agriculture and construction of
infrastructure, causing less trees to be available to photosynthesise and
thus lead to an increase in carbon dioxide to trap heat.
·
Increase in deforestation where trees are removed to
meet the increasing demand for products. This leads to less trees to be
available to photosynthesise and thus lead to an increase in carbon dioxide
that will trap heat.
·
Increase in population where more fossil fuels are
needed to produce energy for industries, transport, commercial and domestic
activities. This will lead to more carbon dioxide being produced and trapped
more heat.
·
Increase in population will lead to an increase in
demand for food. More flooded rice fields and more farms to rear cattle will
lead to an increase in methane, which is a greenhouse gas that will trap
heat.
·
The use of nitrogen-based fertilisers to improve crop
yields so as to feed the increasing population will lead to more nitrous
oxide that will trap heat.
4@1m
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(d)
|
‘Sea level rise is the main challenge posed
by climate change.’ How far do you
agree with this statement? Give
reasons for your answer. [8]
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Level 1 : Problems
brought by sea level rise such as flooding of coastal and low-lying areas,
animals that need year-round ice caps will face extinction and marine
creatures losing their nursey grounds
Level 2 : Include 2
more main problems besides sea level rise – reduction in food production,
heat-related health problems, thrive of tropical disease, lose of valuable
plants for research, falling water level in river affecting navigation,
irrigation and hydroelectricity
Level 3 : detailed
level 2 + conclusion
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Section B
Answer one question from
this section.
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3
|
(a)
|
Study Fig. 6 (Insert), which is a cartoon
related to food consumption in a developed country (DC). Use the cartoon
shown in Fig. 6 to help you explain the causes and effects of obesity in
DCs. [5]
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5@1m
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(b)
|
Describe the economic problems for countries
which are caused by insufficient food consumption. [5]
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Lower productivity
5@1m [HG
EG TB p113]
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(c)
|
Study Fig. 7, which tells the story of a
young girl in Uganda, a country in Africa.
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Fig. 7
|
|||||
With the help of Fig. 7, explain how access
to clean drinking water could affect the lives of people in LDCs. [4]
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4@1m
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(d)
|
Study Fig. 8 (Insert), which shows the
distribution of malaria in parts of Asia.
Describe the distribution of the areas
suffering from high levels of malaria.
[3]
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3@1m
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(e)
|
‘Socio-economic factors are more important
than environmental factors in contributing to the spread of malaria.’ How far do you agree? Give reasons for your answer. [8]
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Socio-economic factors in the
spread of malaria
-
Overcrowded
living conditions
-
Lack
of proper sanitation
-
Limited
provision of and access to health care
Environmental factors in the
spread of malaria
-
Poor
drainage and stagnant water
-
Effects
of heavy rains, monsoons
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4
|
(a)
|
Study Fig. 9, which gives information about
an experiment to produce genetically modified wheat.
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|
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Fig. 9
|
|||||
Use Fig. 9 to help you suggest the
advantages to be gained from developing the new form of genetically modified
wheat. [5]
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5@1m
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(b)
|
What are the main threats created by
genetically modified crops? [5]
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5@1m [Can include development
of points to a max of 1m]
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(c)
|
Study Fig. 10 (Insert), which shows some
factors affecting crop production in West Africa. Compare the prospects for the yield of
crops in Chad with that in Senegal. [3]
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Chad in the east and Senegal
in the west
Chad is
likely to have higher yield of crops than Senegal
Why?
-
Higher
rainfall in July compared to Senegal.
In fact, Senegal experiences erratic rains and thus there will be
delayed planting
Senegal
is likely to have higher yields of crops than Chad
-
Near
the coast, influence of rain from the onshore winds in July
-
No
desert locust to destroy the crops
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(d)
|
Study Photograph A (Insert), which shows a
farming process. Describe the farming process shown in Photograph A, and
explain its advantages relating to crop yields. [4]
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4@1m
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(e)
|
‘Political and economic strategies are the
most important in overcoming the problem of food shortage.’ How far do you agree? Give reasons to support your answer. [8]
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Political strategies can
overcome problem of food shortage
-
Agricultural
policy e.g. Punjab Agriculture Dept … started education programme for wheat farmers…
farmers taught about using HYV seeds, pesticide treatment and irrigation
methods
-
Stockpiling
in DCs
-
ASEAN
… Thailand helped other member countries e.g. Cambodia in improving their
rice yields
Economic strategies can
overcome problem of food shortage
-
Free
trade
-
Agribusiness
Other factors
Technological factors e.g.
using Green Revolution methods
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ACS BARKER
ANSWERS
Qns. No
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Answer
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Marks
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(c)(i)
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·
The valley floor is gently sloping and
covered in vegetation.
·
The valley floor is broad.
·
The sides of the valley are steep.
The tops of the block mountains are flat.
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1 mark per point
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(e)
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ANDERSON SEC
ANSWERS
(i) Identify the landform located in the
area labelled A on Figure 1. [1]
(ii)
Fold
mountains—the Himalayas mountain range.
(ii) Using information from Figure 1 and
your understanding of plate tectonics, explain the processes taking place at
the area labelled A. [4]
- Convergent
plate margin between
the Eurasian and Indian-Australian plate where two continental plates collide
- No
subduction occurs as
the 2 plates are of the same
density
- The continental masses are
uplifted and folded forming a mountain range
Reserve 1m if no mention
of names of plates from Fig.1.
(iii)
The area labelled B is where the
Mid-Atlantic Ridge is found.
Describe what are ridges and explain how they
are formed. [4]
- The massive Mid-Atlantic Ridge is
a continuous mountain range up to a height of 2500m found in the ocean.
- Mid-ocean ridges occur along divergent plate boundaries.
- In this area, new ocean floor is created
as the Earth’s tectonic plates spread apart and new crust are added.
- As the plates separate, some molten
rock rises to the seafloor, producing enormous volcanic eruptions of
basalt and forming of volcanoes alongside the ridges.
(i) Identify the type of volcano that is shown in Figure 3. [1]
- It is a Stratovolcano
(iii)
Using information from Figure 3 only, describe some
impacts brought about by the eruption of Mt St Helen's. [4]
- The
eruption brought about pyroclastic flows.
- There
is also evidence of mudflow(Lahars)
- The
eruption has impacted the area with a huge burnt zone.
- There
is also a huge area of debris-avalanche brought about by the eruption
which melted the snow-capped volcano.
(iii)
Using the scale provided of 3.5cm=10km, calculate the
distance from the lava dome to Goat Mount. [2]
22.6km
BUKIT MERAH SEC ANSWERS
|
|
Describe and account for the relationship between air pressure and
altitude.
|
[4]
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It is an inverse relationship; i.e. if the altitude goes up, the
pressure goes down and vice versa [1m].
For eg. at sea level, the pressure is around 1000mb but at an altitude
of 4km it drops to around 600mb or
other possible examples taken from graph[1m]
2 reasons to explain:
(1) As the air pressure is determined by the height of the column of
air over the land surface, at higher altitudes there is a shorter column of
air, so there is lower air pressure. [1m]
(2) At higher altitudes, there are less air molecules [air is thin]
due to gravity pulling the air molecules to sea level. So as thin air has
less weight, the pressure is less.
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2
|
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Fig. 2 shows climatic data for a weather station in an Asian city.
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Station 2m above sea level, latitude 13oN
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Fig.
2
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(a)
|
State how the data could be represented on a climograph.
|
[2]
|
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Rainfall à bar graph [1m]
Temperature à line graph [1m]
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(d)
|
Using the data given in Fig.2, calculate:
(i)
the annual temperature
range
(ii)
the average monthly
temperature
(iii)
the total annual rainfall
[show your working]
|
[6]
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3
|
(a)
|
Study Fig. 3A which shows the climograph of Dhaka, Bangladesh and Fig.
3B shows the geographical location of Dhaka.
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|
(i)
|
Identify and describe
Dhaka’s climate.
|
[4]
|
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|
Dhaka’s
climate is a tropical monsoon climate. [1m] It has high mean monthly
temperatures of around 26°C, and a range of less than 10°C [i.e. not that
much variation in temperature] [1m], it has heavy rainfall [more than 2000mm/yr]
and it is seasonal [i.e.it has dry seasons and wet seasons] [1m]
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|
(ii)
|
Account for the heavy rainfall of rainfall
in Dhaka.
|
[5]
|
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|
|
During June, the sun is
overhead Tropic of Cancer.[1m] Thus there is LP belt/cell over central Asia,
and a HP belt over central Australia. [1m] Due to pressure gradient. Air
moves from LP cell to HP cell.[1m] Due to Coriolis effect the wind deflects
to the right in the Northern Hemisphere.[1m] As the SW Monsoon winds [1m]
move across the Bay of Bengal they
pick up moisture which falls as rain in the city of Dhaka.[1m]
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BUKIT MERAH ANSWERS 2
b)
Read the temperature of the dry bulb
thermometer on the left column (1m)
The depression
of the wet bulb is the temperature difference between the wet and dry bulb
thermometer (1m)
Find the value
at which the dry bulb temperature intersects with the wet bulb depression (1m)
The relative
humidity would be the number shown expressed as a percentage (1m)
d)
Comparative bar graph (1m) or comparative line
graph (1m)
Reason: To
enable data to be compared and cross referred (1m)
e)
No, this is because the relative humidity is
a ratio of the actual amount of water vapour in the air compared to the max.
amount it can hold at a particular temperature. So, at a particular temp. you
can have various levels of relative humidity. (2m)
2a) i)
Countries such as China and India which did not sign the Kyoto Protocol
contributed significantly to the global emissions, which nullified the effort
made by countries which signed and decreased emission. (2m)
ii)
Failure of several countries such as Denmark, Sweden and USA in meeting the
targets they set in the reduction of greenhouse gas emission, hence undermining
total reduction set by the Protocol. (2m)
iii)
It was not compulsory for developed countries to provide support and help to
less developed countries in developing solutions to decrease greenhouse gas
emission, hence not effectively reducing emission for some countries. (2m)
Award
2m each for each factor explained, up to a max of 4m
3a) Identify
that the tourists arrive due to the factor on MICE (Meetings, Incentives,
Conventions and Events), as Singapore is the hosting city for the SEA Games.
(1m) (Compulsory factor)
There
will be 2 main groups of tourists: 1 group as the Games participants and
representatives, and the other group as the supporters (1m).
Other
factors not relating to case study:
-
Good facilities in Singapore that could ease
travelling
-
Increase in disposable income of the people
in ASEAN
-
Improvements
in amenities where there are presence of attractions and range of facilities
available.
-
Budget airlines that encouraged cheap and
short haul travelling to Singapore
-
Ease of booking air tickets and accommodation
through the use of internet
-
Any other acceptable factors
Award max of
4m
b) How
far do you agree that tourism’s negative impact outweighs the positive impact
it brings to a LDC?
Negative
impact
-
Underuse of facilities built for special
events to attract and accommodate large number of tourists.
-
Shortage of services caused by the
sacrificing of locals’ needs to meet tourists’ needs and hence causing social
displeasure and inflation of costs.
-
Seasonal unemployment caused by tourism
related jobs that function and hire only during specific periods of the year,
hence causing such workers to lose their jobs when such industries have to
cease operation temporarily.
-
Dilution of local cultures due to the
adaptation of foreign cultures in order to appeal to needs of tourists
-
Increase in crime such as pickpocketing, theft,
robbery, rape etc that would cause fear in the locals and tarnish the
reputation of the destination country.
-
Increase in environmentally harmful
activities such as littering, pollution, vandalism, deforestation and over
consumption of natural resources.
Positive
impact
-
Growth in income due to employment
opportunities and increase in foreign exchange, thereby improving the standard
of living of the locals
-
Development of infrastructure to cater to
needs of tourists but directing benefiting the locals more as their standard of
living improve as a result.
-
The preservation of some local cultures and
customs in order to attract tourists but benefitting the country as a result
-
Conservation of the natural environment:
nature reserves, safari parks, rivers, waterfalls etc
CHESTNUT
ANSWERS
2(b)
|
|
“Bengkulu will experience only relief rain because it is located near
the Barisan Mountain Range.” With reference to Fig. 6, how far do you agree
with this statement?
Level 3 (5
– 6 marks):
I do not
agree with the statement to a large extent as both relief and convectional rain occurs in Bengkulu.
It can thus be seen that relief rain is not the only type of rain that
falls in Bengkulu but convectional rain as well.
Level 2 (3
– 4 marks):
I do not
agree with the statement to a large extent as both relief and convectional rain occurs in Bengkulu.
·This is because Bengkulu is located in the tropics at a latitude of
about
5Õsouth of
the Equator, as well as near a mountain range.
It can thus be seen that relief rain is not the only type of rain that
falls in Bengkulu but convectional rain as well.
Level 1 (0
– 2 marks):
I do not
agree with the statement to a large extent as both relief and convectional rain occurs in Bengkulu.
It can thus be seen that relief rain is not the only type of rain that
falls in Bengkulu but convectional rain as well.
|
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CHONG BOON ANSWERs
|
|
2
|
|
Explain the differences between an dormant and
extinct volcano.
·
Dormant: Currently inactive but may erupt
in the near future
Extinct: Volcanoes
without current seismic activity and no geological evidence of eruption in
the past thousands of years
|
[3]
|
|
ci
|
With reference to Fig. 7 and other studies
you have made, explain why the impact of the earthquake was greater for
people living in Muzaffarabad compared to Srinagar.
·
Impact of earthquake was greater in
Muzaffarabad because of its distance from the epicenter and plate boundary.
[1]
·
Muzaffarbad is located closer to the
epicentre compared to Srinagar. [1]
·
Energy of seismic waves is reduced with
distance from the epicentre. [1]
·
Furthermore, Srinagar is located further
away from the plate boundary unlike Muzaffarabad, which is located closer to
the plate boundary[1]
·
|
[5]
|
CLEMENTI TOWN ANSWERS
(ii) Explain the advantages and disadvantages of
using a fill-in-questionnaire to investigate the hypothesis
AO1+AO2
Advantages
·
Fill-in-questionnaires
are easier for tourists to understand the question asked as miscommunication
may arise due to different English accent.
·
Short
survey is less daunting than interviews
Disadvantages:
·
Some
questions asked can be redundant or irrelevant
·
Waste
of tourist’s time
·
Sensitive
questions
|
(i)
|
Identify and describe the type of
tourism as described in Fig. 3a.
|
[2]
|
|
|
|
|
|
|
AO1+AO3
·
Meetings,
Incentives, Conventions and Events (MICE) Tourism
·
A
type of tourism in which large groups, usually planned well in advance, are
brought together for a particular purpose.
|
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