Cambridge IGCSE · Thinka 原創模擬試題

2024 Cambridge IGCSE Geography (0460) 模擬試題連答案詳解

Thinka Jun 2024 (V1) Cambridge International A Level-Style Mock — Geography (0460)

195 分285 分鐘2024

An original Thinka practice paper modelled on the structure and difficulty of the Jun 2024 (V1) Cambridge International A Level Geography (0460) paper. Not affiliated with or reproduced from Cambridge.

Paper 11 Geographical Themes

Candidates must answer three questions in total: one from Section A (Population and Settlement), one from Section B (The Natural Environment), and one from Section C (Economic Development). Each question is worth 25 marks.

3 題目 · 75 分

題目 1 · Structured

25 分

Section A: Population and Settlement

Question 1

(a) Study Fig. 1, which shows a simplified model of land use in a typical LEDC city.

[Fig. 1 Description: A concentric and sector-based model showing:
Zone A: Central Business District (CBD) in the center.
Zone B: Industrial sector radiating from the center.
Zone C: High-class residential sector along a main transport spine.
Zone D: Low-class, informal/squatter settlements on the outer periphery.]

(i) Identify the zone labeled D. [1 mark]
(ii) Describe two typical characteristics of the Central Business District (CBD) of a city. [2 marks]
(iii) Explain why high-class residential zones are often located on the rural-urban fringe or along major transport spines in LEDC cities. [3 marks]
(iv) Explain the challenges and problems faced by residents living in squatter settlements on the edge of LEDC cities. [4 marks]

(b) Study Fig. 2, which shows some strategies used to manage traffic in urban areas.

[Fig. 2 Description: A diagram illustrating three urban transport management schemes:
1. Park and Ride scheme.
2. Congestion Charging Zone.
3. Integrated public transport networks (bus, tram, rail on one ticket).]

(i) Describe how a 'Park and Ride' scheme and 'Congestion Charging' work to reduce traffic congestion. [3 marks]
(ii) Explain how urban regeneration projects can improve the quality of life for residents living in run-down inner-city areas. [5 marks]

(c) Case Study
For a named urban area you have studied, describe and explain the causes of rapid urban growth (urbanisation). [7 marks]

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解題

(a)(i) Squatter settlement / informal settlement / favela / shantytown / slum.
(a)(ii) Two characteristics of the CBD: high land values; high density of tall buildings / skyscrapers; high concentration of offices and shops; focus of transport networks / high accessibility; low residential population.
(a)(iii) High-class residential zones are located there because: high-income residents can afford transport costs/own cars to commute from outer areas; the rural-urban fringe has a cleaner environment with less noise and air pollution; larger plots of land are available to build modern, spacious housing; transport spines provide fast, direct access to the CBD and modern shopping malls.
(a)(iv) Challenges of squatter settlements: lack of clean/piped water leading to water-borne diseases like cholera; lack of proper sanitation/sewerage systems causing pollution and health hazards; homes are built from flimsy materials (wood, cardboard) and are highly vulnerable to fires, landslips, or collapse during storms; lack of access to formal employment leading to reliance on low-paid informal work; high crime rates and drug-related violence due to lack of police presence; lack of basic infrastructure like clinics, schools, and electricity supply.
(b)(i) Park and Ride: Drivers leave their cars at large, cheap or free parking lots on the edge of the city and take dedicated, fast buses or trains directly to the center. This reduces the number of private cars entering the congested CBD. Congestion Charging: A daily fee is charged to drivers who choose to enter the designated central zone during peak hours, which discourages unnecessary car journeys and encourages public transport use.
(b)(ii) Urban regeneration: Renovation of historic/old buildings improves the safety and aesthetic appeal of the neighborhood; clearing derelict land to build parks or community spaces provides recreational areas; modernising public transport infrastructure reduces commuting times and improves accessibility; attracting new businesses and offices creates local job opportunities; building modern, affordable housing reduces overcrowding and improves living conditions; developing community clinics, schools, and youth centers improves local health and education standards.
(c) Case Study - Mumbai:
- Rural-to-urban migration is driven by push factors in rural Maharashtra, such as farm mechanisation reducing jobs, low wages, and drought-induced crop failures.
- Pull factors to Mumbai include high-paying jobs in manufacturing, finance (e.g., Bollywood, banking), better educational opportunities, and access to medical services.
- High natural increase adds to the growth, driven by a youthful migrant population with high birth rates and falling death rates due to better urban healthcare.

評分準則

(a)(i) 1 mark for naming: Squatter settlement / informal settlement / favela / shantytown / slum.
(a)(ii) 2 marks for two distinct characteristics: high land values (1), high-rise buildings (1), lack of residential population (1), high density of offices/retail (1), transport hub (1).
(a)(iii) 3 marks for three explained points: high-income residents can afford cars/commuting costs (1); rural-urban fringe is cleaner/quieter than inner-city (1); availability of larger land plots for spacious houses (1); transport spines provide easy, direct access to the CBD/services (1).
(a)(iv) 4 marks for four distinct challenges: poor water supply / water-borne diseases (1); lack of sanitation / open sewers (1); flimsy housing vulnerable to weather/fires (1); high informal sector reliance / low pay (1); high crime rates / lack of policing (1); lack of basic services like electricity, schools, or healthcare (1).
(b)(i) 3 marks total: Max 2 marks for explaining Park and Ride (park on outskirts (1), take bus/train to CBD (1)); Max 2 marks for explaining Congestion Charging (pay fee to enter central zone (1), deters car travel / encourages public transport (1)).
(b)(ii) 5 marks total: 1 mark for each valid, explained point showing how regeneration improves life: renovating old housing improves safety/insulation (1); green spaces improve mental/physical health (1); transport upgrades reduce travel stress/times (1); local jobs reduce unemployment (1); new schools/clinics improve education/healthcare (1).
(c) Case Study: 7 marks total.
Level 1 (1 to 3 marks): Simple, generic statements describing/explaining urbanisation (e.g., people move for better jobs; there are better schools; the population is growing fast).
Level 2 (4 to 6 marks): Developed, explained statements identifying specific push/pull factors or natural increase (e.g., small-scale farmers in rural areas leave because of unpredictable rainfall and debt, pulling them to the city where manufacturing jobs offer regular income; natural increase is high because the city has a youthful age structure, leading to high birth rates).
Level 3 (7 marks): Detailed, comprehensive explanation with specific place-specific details for a named urban area (e.g., Mumbai, Rio de Janeiro) highlighting specific locations, push/pull factors, or statistical details of rapid growth.

題目 2 · Structured

25 分

Section B: The Natural Environment

Question 2

(a) Study Fig. 3, which is a diagram showing a cross-section of a river meander.

[Fig. 3 Description: Cross-section of a river meander showing:
Side A: An inner bank with a gentle slope and deposited sand/gravel.
Side B: An outer bank with a steep cliff/river cliff and deep channel.
Arrows show the fastest flow (thalweg) near Side B.]

(i) Identify the river landforms or features labeled Side A and Side B. [1 mark]
(ii) Name two processes of river erosion. [2 marks]
(iii) Explain how hydraulic action and abrasion (corrasion) erode the bed and banks of a river. [3 marks]
(iv) Explain the formation of an oxbow lake. [4 marks]

(b) Study Fig. 4, which shows a hydrograph for a river before and after urbanisation.

[Fig. 4 Description: A line graph comparing two storm hydrographs for the same drainage basin.
Line 1 (Before urbanisation): Gentle rising limb, low peak discharge, long lag time.
Line 2 (After urbanisation): Steep rising limb, high peak discharge, short lag time.]

(i) Explain why urbanisation changes the shape of a storm hydrograph as shown in Fig. 4. [3 marks]
(ii) Explain how different hard engineering strategies can be used to manage the risk of river flooding. [5 marks]

(c) Case Study
For a named river you have studied, describe the opportunities presented by the river and its valley, and explain how the hazards of flooding are managed. [7 marks]

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解題

(a)(i) Side A = slip-off slope / inner bend / point bar; Side B = river cliff / outer bend. (Both must be correct for 1 mark).
(a)(ii) Two processes of river erosion: Hydraulic action; Abrasion (corrasion); Attrition; Solution (corrosion).
(a)(iii) Hydraulic action: The sheer force of the moving water forces air and water into cracks in the river's bed and banks, expanding the cracks and causing rocks to break away. Abrasion: The river's load (such as pebbles, sand, and gravel) is dragged and scraped along the bed and banks, wearing them away by friction like sandpaper.
(a)(iv) Oxbow lake formation: Continuous erosion on the outer bends of a meander narrows the neck of land between the loops. During a high-flow event or flood, the river takes the straightest, shortest route and cuts directly through the narrow neck. The flow of water is concentrated in the new straight channel, and deposition of silt/sediment occurs at the entry and exit of the old loop. This deposition eventually seals off the meander loop entirely, leaving a crescent-shaped oxbow lake separate from the main river channel.
(b)(i) Urbanisation increases impermeable surfaces (concrete, tarmac), which prevents rainwater from infiltrating into the soil. This drastically increases surface runoff. Gutters, storm drains, and artificial channels direct this runoff rapidly into the river. Consequently, the lag time between peak rainfall and peak discharge is shortened, and the peak discharge is much higher and steeper.
(b)(ii) Hard engineering strategies:
- Levees / Embankments: Artificially raising and strengthening the banks of the river, which increases the channel's carrying capacity and prevents overflow.
- Dams and Reservoirs: Building a concrete barrier across the river channel to control water release, storing excess water in the reservoir during heavy rain.
- Channelisation: Straightening, deepening, or widening the river channel to allow water to flow faster away from vulnerable urban areas.
- Flood relief channels / Spillways: Man-made bypass channels built to divert excess water flow away from high-value areas when river levels rise.
(c) Case Study - River Mississippi:
- Opportunities: The Mississippi provides fertile alluvial soils for commercial agriculture (growing cotton and soy); it is used as a major transportation corridor for barges carrying goods; it provides water for industrial cooling and domestic use; and dams along its tributaries generate hydro-electric power.
- Flood management: Large artificial levees have been built along thousands of miles of the river banks; the Bonnet Carr) Spillway is used to divert excess floodwaters into Lake Pontchartrain to protect New Orleans; and major dams and reservoirs (like those in the Tennessee Valley) regulate river flow upstream.

評分準則

(a)(i) 1 mark: Side A is slip-off slope / point bar AND Side B is river cliff / outer bend.
(a)(ii) 2 marks: 1 mark for each named erosion process (hydraulic action, abrasion, attrition, solution).
(a)(iii) 3 marks total: Max 2 marks for hydraulic action (force of water (1), compresses air in cracks (1), breaks rock (1)); Max 2 marks for abrasion (load/sediment (1), scrapes/grinds bed and banks (1)).
(a)(iv) 4 marks total: 1 mark for each progressive stage explained: erosion narrows the meander neck (1); high flow/flood cuts through the neck (1); deposition seals off the old meander loop (1); crescent-shaped oxbow lake is formed (1).
(b)(i) 3 marks total: Impermeable surfaces reduce infiltration (1); increased surface runoff (1); storm drains/gutters transport water faster to the river (1); leads to shorter lag time / higher peak discharge (1).
(b)(ii) 5 marks total: 1 mark for each hard engineering strategy and 1 mark for its explanation (up to 5 marks): levees raise bank height to increase capacity (1); dams store water upstream and regulate flow (1); channelisation straightens/widens river to speed up water flow (1); spillways divert peak flows away from cities (1).
(c) Case Study: 7 marks total.
Level 1 (1 to 3 marks): Simple statements describing opportunities or flood management (e.g., people use it for boats; they grow crops; they build walls to stop floods).
Level 2 (4 to 6 marks): Developed explanations of opportunities and management (e.g., the fertile floodplains provide nutrient-rich silt for intensive farming; they build high levees along the river banks to prevent the water from flooding towns; dams upstream hold back water to prevent flooding downstream).
Level 3 (7 marks): Detailed, comprehensive coverage of both opportunities and management with specific named locations/details along the river (e.g., Bonnet Carr) Spillway protecting New Orleans, major agricultural crops in the delta, and specific reference to the 1993 flood or specific levee systems).

題目 3 · Structured

25 分

Section C: Economic Development

Question 3

(a) Study Fig. 5, which shows data on international tourist arrivals in a developing country between 2010 and 2022.

[Fig. 5 Description: A line graph showing the number of international tourists (in millions):
2010: 1.2M
2012: 1.5M
2014: 1.9M
2016: 2.4M
2018: 3.1M
2020: 0.8M (sharp drop)
2022: 2.9M (recovery)]

(i) Describe the overall trend in tourist arrivals between 2010 and 2022. [1 mark]
(ii) Suggest two reasons for the global increase in tourism over the last few decades. [2 marks]
(iii) Explain three physical attractions of a country that can encourage the development of tourism. [3 marks]
(iv) Explain how the development of tourism can bring economic benefits to a country. [4 marks]

(b) Study Fig. 6, which shows some environmental issues caused by coastal tourism.

[Fig. 6 Description: A diagram illustrating the following issues:
1. Untreated sewage discharged directly into the sea near beach resorts.
2. Destruction of coral reefs by tourists stepping on them or boat anchors.
3. Loss of coastal mangrove forests to clear space for building luxury hotels.]

(i) Describe three negative environmental impacts of tourism shown in Fig. 6 or from your own studies. [3 marks]
(ii) Explain how tourism can be managed to ensure it is sustainable and has minimal impact on the environment. [5 marks]

(c) Case Study
For a named area where tourism is important, describe the advantages and disadvantages of tourism to the local people and environment. [7 marks]

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解題

(a)(i) Overall trend: Tourist arrivals grew steadily from 1.2 million in 2010 to a peak of 3.1 million in 2018, experienced a sharp drop to 0.8 million in 2020, and then strongly recovered to 2.9 million by 2022.
(a)(ii) Reasons for global growth in tourism: Rising disposable incomes worldwide; increased paid annual leave; availability of cheap flights and budget airlines; easier online booking; increased marketing and global awareness.
(a)(iii) Physical attractions: Sandy beaches and warm seas for sunbathing and swimming; dramatic mountain landscapes for hiking, climbing, and skiing; spectacular ecosystems/national parks for wildlife viewing and safaris; warm, sunny climates with guaranteed sunshine.
(a)(iv) Economic benefits of tourism: Creates direct jobs in hotels, restaurants, and transport sectors; generates indirect jobs in agriculture (supplying food to hotels) and souvenir manufacturing; provides foreign currency earnings which helps the balance of payments; brings tax revenues to the government to fund infrastructure development (roads, airports, hospitals); creates a multiplier effect as tourist spending circulates through the wider economy.
(b)(i) Negative environmental impacts: Discharge of untreated sewage pollutes seawater and destroys marine ecosystems; physical damage to coral reefs from tourist trampling and anchoring of tourist boats; loss of biodiversity and natural coastal protection due to clearing mangrove forests for hotel construction; littering on beaches; increased carbon footprint from tourist flights and ground transport.
(b)(ii) Managing tourism sustainably:
- Ecotourism: Promoting small-scale tourism that minimizes ecological footprints and supports local conservation efforts.
- Enforcing visitor numbers: Setting daily limits or quotas for fragile environments (e.g., restricted access to marine reserves).
- Green building codes: Mandating that hotels install renewable energy sources, water recycling, and modern sewage treatment facilities.
- Promoting local ownership: Ensuring local communities run and profit from tourism, reducing economic leakage.
- Establishing protected zones: Creating Marine Protected Areas (MPAs) or National Parks where commercial activities and hotel building are banned.
- Education: Raising awareness among tourists to respect natural habitats and wildlife.
(c) Case Study - The Maldives:
- Advantages: Tourism accounts for over 28% of GDP and provides high-paying employment in luxury resorts; tax revenues have funded schools and medical facilities in Mal; it has driven the protection of coral reefs and marine life because they are key attractions.
- Disadvantages: Most profits leak out of the country to foreign-owned resort chains; local culture is diluted on inhabited islands; resorts produce immense amounts of waste which is burned on Thilafushi (Trash Island), causing air and ground pollution; tourist activities (snorkeling, speedboats) damage coral reefs; and high water consumption by resorts strains limited freshwater lenses.

評分準則

(a)(i) 1 mark: General rise over the period / increase from 1.2M to 2.9M / mention of the 2020 drop and recovery.
(a)(ii) 2 marks: 1 mark for each valid reason (e.g., higher disposable incomes, cheaper flights, more holiday time).
(a)(iii) 3 marks: 1 mark for each described physical attraction (e.g., sandy beaches for sunbathing, mountains for skiing, climate/sunshine, diverse wildlife).
(a)(iv) 4 marks: 1 mark for each explained economic benefit: direct employment (1); indirect employment/multiplier effect (1); foreign exchange earnings (1); government tax revenue (1); infrastructure improvements (1).
(b)(i) 3 marks: 1 mark for each described negative impact: sewage pollution in sea (1); physical damage to coral reefs (1); clearing of mangroves / habitat destruction (1); littering (1); air pollution from transport (1).
(b)(ii) 5 marks: 1 mark for each valid management strategy explained (up to 5 marks): ecotourism projects (1); setting quotas/caps on visitor numbers (1); strict sewage treatment laws for hotels (1); local employment/reinvestment (1); marine protected zones to ban anchoring (1); educating tourists on eco-friendly practices (1).
(c) Case Study: 7 marks total.
Level 1 (1 to 3 marks): Simple statements describing advantages/disadvantages (e.g., tourism brings money and jobs; it pollutes the sea and makes things expensive).
Level 2 (4 to 6 marks): Developed, explained statements showing both advantages and disadvantages to local people and/or environment (e.g., tourism creates jobs in luxury resorts which increases household incomes, but much of the profit leaks out to foreign-owned companies; building hotels destroys local mangroves, but marine reserves protect coral reefs from damage).
Level 3 (7 marks): Detailed, comprehensive case study of a named area (e.g., Maldives, Kenya Coast) showing balanced coverage of both positive and negative impacts on both people and the environment with specific, place-specific details.

Paper 21 Geographical Skills

Candidates must answer all questions on the exam paper. This paper tests skills of map interpretation, graph reading, and geographical processing.

6 題目 · 60 分

題目 1 · structured

20 分

### Figure 1.1: Map Extract Information (Scale 1:50 000)

Figure 1.1 describes a 1:50 000 topographic map extract of the Glen Shira valley. On this map, the grid lines represent 1-kilometre intervals (spaced exactly 2 cm apart on the map paper). The contour interval is 10 metres.

**Map Key & Coordinate Reference Points:**
* **Grid coverage:** Eastings 30 to 36, Northings 10 to 16.
* **Settlement of Clachan:** Centered around grid reference 314118.
* **Post Office (PO):** Located at 312115.
* **Road Bridge:** Located at 334136, where the B802 minor road crosses the River Glen.
* **Campsite:** Located at 338139.
* **Ben More Peak:** A mountain with a triangulation station (height labeled 284m) located at 348154 in grid square 3415.
* **River Glen:** Flows from the north-east corner (3616) down the valley to the south-west (3111).
* **A85 Road:** A primary dual-carriageway road running parallel to the River Glen.

Answer the following questions using the map information provided in Figure 1.1.

**(a) Grid References**
(i) State the four-figure grid reference of the grid square containing the triangulation station on Ben More. [1 mark]
(ii) State the six-figure grid reference of the campsite located in the valley. [2 marks]

**(b) Map Interpretation**
Identify the specific feature or symbol located at each of the following grid references:
(i) 312115 [1 mark]
(ii) 348154 [1 mark]
(iii) 334136 [1 mark]

**(c) Distance and Direction**
(i) Calculate the straight-line distance, in metres, between the Post Office at 312115 and the campsite at 338139. Show your calculations. [3 marks]
(ii) State the compass direction and the bearing (in degrees) from the Post Office at 312115 to the campsite at 338139. [2 marks]

**(d) Relief Analysis**
Describe the relief (slopes and height) of grid square 3415. [4 marks]

**(e) Settlement Geography**
Using evidence from the map extract, explain the factors influencing the site and situation of the settlement of Clachan (centered around 314118). [5 marks]

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解題

**(a) Grid References**
* (i) The triangulation station of Ben More is located within the grid square defined by Easting 34 and Northing 15. Therefore, the 4-figure grid reference is **3415**.
* (ii) The campsite is situated 8 tenths east of line 33, and 9 tenths north of line 13. This yields the 6-figure grid reference **338139**.

**(b) Map Interpretation**
* (i) **312115** refers to the **Post Office (PO)**.
* (ii) **348154** refers to the **Triangulation station / Ben More peak** (with spot height 284m).
* (iii) **334136** refers to the **Road bridge** where the B802 crosses the River Glen.

**(c) Distance and Direction**
* (i) Grid difference calculations:
\(\Delta x = 33.8 - 31.2 = 2.6\) grid units
\(\Delta y = 13.9 - 11.5 = 2.4\) grid units
Using Pythagoras' theorem: \(\text{Distance} = \sqrt{2.6^2 + 2.4^2} = \sqrt{6.76 + 5.76} = \sqrt{12.52} \approx 3.54\) grid units.
Since 1 grid unit = 1 km (1000m) or 2 cm on a 1:50 000 map:
\(3.54 \times 1000\text{ m} = 3540\text{ metres}\).
Acceptable measured range: **3450 to 3650 metres** (7.1 cm on map).
* (ii) The campsite (33.8, 13.9) is north-east of the Post Office (31.2, 11.5).
Compass direction: **North-East (NE)**.
Bearing calculation: \(\tan(\theta) = \frac{2.6}{2.4} = 1.083 \implies \theta \approx 47.3^\circ\).
Bearing: **047 degrees** (Acceptable range: **045^\circ to 049^\circ**).

**(d) Relief Analysis**
* The elevation ranges from below 150m in the south-west corner of the grid square to a maximum height of 284m at the summit of Ben More.
* The contours are highly concentrated/closely-spaced, indicating very steep slopes.
* The slopes form a concentric shape around the peak, showing a dome/hill structure.
* The north-eastern aspect of the hill has slightly more widely spaced contours, indicating gentler slopes compared to the steep south-western face.

**(e) Settlement Geography**
* **Relief / Flat Land:** The settlement is located on low-lying land below the 50m contour (around 45m spot height), which provides a flat or gently sloping surface ideal for building houses and infrastructure.
* **Water Supply:** It is close to the River Glen, ensuring easy access to freshwater for domestic and agricultural use.
* **Flood Avoidance (Dry Point):** While close to the river, the core settlement is slightly elevated above the river bed to reduce the risk of flooding.
* **Transport & Accessibility:** The site is situated directly along the primary A85 dual-carriageway and close to minor road junctions, ensuring excellent connectivity.
* **Shelter:** The site is positioned in the valley basin, sheltered from strong winds by the surrounding higher ground of Ben More to the north-east.

評分準則

**(a) Grid References**
* (i) 1 mark for correct 4-figure grid reference: **3415**.
* (ii) 2 marks for correct 6-figure grid reference: **338139** (1 mark for correct easting 338; 1 mark for correct northing 139). Reject: 3313.

**(b) Map Interpretation**
* (i) 1 mark for **Post Office** or **PO**.
* (ii) 1 mark for **Triangulation station / monument / Ben More peak / spot height 284m**.
* (iii) 1 mark for **Bridge / road bridge**.

**(c) Distance and Direction**
* (i) Total 3 marks:
* 1 mark for measuring distance on map (approx. 7.1 cm, or 3.5 to 3.6 grid units).
* 1 mark for showing correct scale calculation step (e.g., multiplying by 500 or using 1 unit = 1 km).
* 1 mark for correct final distance in metres: **3550m** (Accept **3450 to 3650m**). Deduct 1 mark if units (metres) are missing.
* (ii) Total 2 marks:
* 1 mark for correct compass direction: **North-East / NE**.
* 1 mark for correct bearing: **047 degrees** (Accept **045 to 049 degrees**). Must include degree symbol or state "degrees".

**(d) Relief Analysis**
Award 1 mark for each valid descriptive point up to a maximum of 4 marks:
* High land / peak / summit of Ben More present [1]
* Highest point is 284 metres / triangulation station [1]
* Steep slopes indicated by closely-spaced contours [1]
* Concentric contours show a hill shape [1]
* Lowest land is in the south-west of the square / below 150m [1]
* Gentler slopes to the north-east / steeper slopes to the south-west [1]

**(e) Settlement Geography**
Award 1 mark for each valid reason supported by map evidence, up to a maximum of 5 marks:
* Sited on flat/gently sloping land (below 50m / 45m spot height) which facilitates construction [1]
* Close to water supply (River Glen) [1]
* Sited above the immediate river bank / dry point to avoid floods [1]
* Along transport routes (A85 primary road / road junctions) for trade and movement [1]
* Sheltered valley position (sheltered by Ben More to the north-east) [1]
* Gently sloping valley floor suitable for agriculture [1]

題目 2 · Data Analysis

8 分

Table 1 shows demographic data for Country X between 1980 and 2020. In 1980, the birth rate was 38 per 1000 and the death rate was 14 per 1000. In 2000, the birth rate was 25 per 1000 and the death rate was 8 per 1000. In 2020, the birth rate was 12 per 1000 and the death rate was 9 per 1000. (a) Calculate the rate of natural increase (as a percentage) for Country X in 1980. Show your working. (b) Describe the trend in the birth rate and death rate between 1980 and 2020. (c) Suggest two reasons for the decline in the birth rate over this 40-year period.

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解題

(a) 1980 Birth Rate = 38/1000, Death Rate = 14/1000. Natural Increase = Birth Rate - Death Rate = 38 - 14 = 24 per 1000. Convert to percentage: \(24 / 10 = 2.4\%\). (b) Birth rate decreased continuously and significantly (by 26 per 1000). Death rate decreased initially from 1980 to 2000 (by 6 per 1000) but then saw a very slight increase by 2020 (by 1 per 1000), showing an overall downward trend. (c) Urbanisation leads to less need for agricultural labor; greater availability and social acceptance of contraception; changing social roles of women with delayed marriage and childbearing; government-led family planning policies.

評分準則

(a) 2 marks: 1 mark for correct method (38 - 14 = 24 per 1000, or dividing by 10), 1 mark for correct final answer (2.4%). Accept 2.4 without percent sign if working is clear. (b) 3 marks: 1 mark for noting both overall decreased; 1 mark for quantifying birth rate decline (e.g., fell by 26 per 1000 or from 38 to 12); 1 mark for noting death rate decreased then rose slightly / fluctuated. (c) 3 marks: 1 mark for each valid reason explained up to a maximum of 3 marks (e.g., family planning access, rising cost of living, female empowerment/careers, reduction in infant mortality).

題目 3 · Geographical Skills

8 分

A weather analyst recorded the following monthly rainfall data for Station Y: January (5mm), February (8mm), March (15mm), April (45mm), May (120mm), June (280mm), July (350mm), August (310mm), September (250mm), October (110mm), November (30mm), December (8mm). Temperatures ranged from a minimum of 21 degrees Celsius in January to a maximum of 33 degrees Celsius in May. (a) Calculate the annual temperature range for Station Y. (b) Identify the three consecutive wettest months and calculate their total combined rainfall. (c) Explain how a maximum-minimum (Six's) thermometer is used to measure daily temperature.

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解題

(a) Annual temperature range is the difference between the maximum and minimum temperature. Maximum = 33°C, Minimum = 21°C. Range = \(33 - 21 = 12^\circ\text{C}\). (b) The three wettest consecutive months are June (280mm), July (350mm), and August (310mm). Total rainfall = \(280 + 350 + 310 = 940\text{ mm}\). (c) The Six's thermometer consists of a U-shaped tube with alcohol bulbs and a mercury thread. As temperature rises, alcohol in the left limb expands, pushing the mercury column which moves the maximum index in the right limb. As temperature falls, alcohol contracts, pulling the mercury back, which pushes the minimum index in the left limb. Magnet is used to reset indexes back to the mercury level.

評分準則

(a) 2 marks: 1 mark for showing correct formula/values (33 - 21), 1 mark for correct calculation (12 degrees Celsius). (b) 2 marks: 1 mark for identifying June, July, August, 1 mark for correct total of 940mm. (c) 4 marks: 1 mark for identifying the roles of expanding/contracting alcohol; 1 mark for stating that mercury pushes the metal indexes; 1 mark for explaining that maximum is read from the right limb and minimum from the left; 1 mark for mentioning the use of a magnet to reset the indices.

題目 4 · Data Analysis

8 分

Table 2 displays river channel characteristics at three sites downstream along the River Glen. Site A (Upper Course): Width = 1.2m, Depth = 0.15m, Velocity = 0.3m/s. Site B (Middle Course): Width = 4.5m, Depth = 0.60m, Velocity = 0.5m/s. Site C (Lower Course): Width = 18.2m, Depth = 2.10m, Velocity = 0.8m/s. (a) Calculate the cross-sectional area of the river channel at Site B. (b) Describe how channel width, depth, and velocity change downstream from Site A to Site C. (c) Explain why river velocity increases downstream despite the reduction in the gradient of the valley.

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解題

(a) Cross-sectional area = Width \(\times\) Depth. For Site B: \(4.5\text{ m} \times 0.60\text{ m} = 2.7\text{ m}^2\). (b) All three parameters increase downstream. Width increases significantly from 1.2m to 18.2m (an increase of 17m). Depth increases from 0.15m to 2.10m. Velocity increases from 0.3m/s to 0.8m/s. (c) As the river moves downstream, it receives water from more tributaries, increasing its discharge. The larger channel has a smaller wetted perimeter relative to its cross-sectional area (higher hydraulic radius), which reduces turbulent friction against the bed and banks, leading to higher efficiency and increased velocity.

評分準則

(a) 2 marks: 1 mark for formula/calculation setup (\(4.5 \times 0.6\)), 1 mark for correct answer with unit (\(2.7\text{ m}^2\)). (b) 3 marks: 1 mark for stating all three increase downstream; 1 mark for supporting with width/depth data; 1 mark for supporting with velocity data. (c) 3 marks: 1 mark for noting increased discharge/tributaries; 1 mark for noting larger/smoother channel; 1 mark for noting reduced friction/higher hydraulic efficiency.

題目 5 · Geographical Themes

8 分

Study the following regional settlement data: Hamlet Z (Population: 80, Services: 1 post box); Town Y (Population: 12,000, Services: 1 secondary school, 2 supermarkets, 3 banks, 1 medical clinic); City X (Population: 250,000, Services: 1 university, 2 specialist hospitals, 1 international airport, 5 department stores). (a) Define 'threshold population' and 'range' of a service. (b) Using the data, explain how settlement size is related to the number and order of services provided. (c) State three reasons why people living in Hamlet Z would travel to City X rather than Town Y.

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解題

(a) Threshold population is the minimum number of consumers required to make a business or service viable/profitable. Range is the maximum distance a customer is willing to travel to obtain a good or service. (b) The data shows a positive relationship between population size and both service quantity and service order. Small settlements like Hamlet Z have small populations (\(80\)) and only low-order, daily-use services (post box). Medium settlements like Town Y (\(12,000\)) have more services of middle-order (supermarkets, secondary schools). Large cities like City X (\(250,000\)) have high-order, specialized services (airports, universities) which require a massive threshold population. (c) People from Hamlet Z would travel to City X for high-order services unavailable in Town Y (e.g., international flights, university education, specialized medical treatment). They might also go to access a wider variety of retail options (department stores) or for multi-purpose trips where several high-order needs are met at once.

評分準則

(a) 2 marks: 1 mark for threshold definition (minimum population needed to support a service), 1 mark for range definition (maximum distance people are willing to travel). (b) 3 marks: 1 mark for noting that larger population size leads to more/higher-order services; 1 mark for comparing Hamlet/Town (low/middle order) with data; 1 mark for comparing City X (high order/specialist services) with data. (c) 3 marks: 1 mark for each valid reason explained (e.g., services not available in Town Y, comparison of specific services like airport vs bank, wider choice of goods, combining multiple tasks).

題目 6 · Data Analysis

8 分

A geographical survey monitored air quality and rain acidity at five stations downwind from an industrial area: Station 1 (\(SO_2\) emissions = 12 tonnes/yr, rainwater pH = 5.6); Station 2 (\(SO_2\) emissions = 85 tonnes/yr, rainwater pH = 4.2); Station 3 (\(SO_2\) emissions = 150 tonnes/yr, rainwater pH = 3.8); Station 4 (\(SO_2\) emissions = 60 tonnes/yr, rainwater pH = 4.5); Station 5 (\(SO_2\) emissions = 5 tonnes/yr, rainwater pH = 5.5). (a) Describe the relationship between the level of sulfur dioxide emissions and the pH of rainwater shown in the data. (b) Identify the station with the most acidic rainfall and explain how acid rain is formed. (c) State three environmental impacts of acid rain on natural ecosystems.

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解題

(a) The data shows an inverse/negative relationship: higher sulfur dioxide emissions correspond to lower pH values (which represents higher acidity). For example, Station 3 has the highest emissions (150 tonnes/yr) and the lowest pH (3.8), while Station 5 has very low emissions (5 tonnes/yr) and a near-normal pH (5.5). (b) Station 3 has the most acidic rainfall (pH 3.8). Acid rain forms when sulfur dioxide (\(SO_2\)) and nitrogen oxides (\(NO_x\)) are emitted into the atmosphere (primarily by industrial factories and power stations burning fossil fuels). These gases react with water molecules, oxygen, and other oxidants in the air to produce mild solutions of sulfuric and nitric acids, which then fall to the ground as precipitation. (c) Impacts: Acidification of aquatic ecosystems (lakes, rivers) killing fish eggs and aquatic organisms; aluminum leaching from soil which is toxic to plants/trees; damage to leaves/needles of trees, reducing their ability to photosynthesize; depletion of essential nutrients (calcium, magnesium) from soils.

評分準則

(a) 2 marks: 1 mark for stating the negative/inverse relationship (higher \(SO_2\) leads to lower pH / higher acidity); 1 mark for supporting with comparative data from at least two stations (e.g., comparing Station 3 and Station 5). (b) 3 marks: 1 mark for identifying Station 3; 1 mark for mentioning emission of sulfur dioxide/nitrogen oxides from fossil fuel burning; 1 mark for explaining the chemical reaction with water vapor/clouds to form sulfuric/nitric acid. (c) 3 marks: 1 mark for each valid environmental impact up to 3 marks (e.g., acidification of lakes/killing aquatic life, damaging tree leaves/forest decline, leaching soil nutrients, dissolving toxic metals like aluminum into water bodies). Do not accept damage to man-made buildings as the question asks for natural ecosystems.

Paper 41 Alternative to Coursework

Candidates must answer all questions, which are based on realistic fieldwork scenarios exploring geographic hypotheses.

2 題目 · 60 分

題目 1 · Fieldwork Hypothesis & Investigation Question

30 分

River Swift Fieldwork Investigation

A group of geography students investigated downstream changes along a 12 km stretch of the River Swift. They selected 5 sampling sites spaced along the course of the river from near its source to near its confluence with a larger river.

They decided to test the following hypotheses:

Hypothesis 1: River velocity increases as distance from the source increases.
Hypothesis 2: Bedload particles become smaller and more rounded downstream.

Answer the following questions based on this fieldwork:

(a) (i) State two safety precautions the students should take when conducting fieldwork in the river. [2 marks]

(a) (ii) State two factors the students should consider when selecting their 5 sampling sites along the river. [2 marks]

(b) (i) Describe how the students would measure the velocity of the river at each site using a mechanical flow meter. [4 marks]

(b) (ii) Suggest why measuring velocity with a flow meter is more reliable than using a float, such as a cork or orange peel. [2 marks]

(c) (i) Describe a systematic sampling method the students could use to collect a representative sample of 20 bedload pebbles at each site. [3 marks]

(c) (ii) Explain how the students would measure the long axis of a selected pebble and assess its roundness. [3 marks]

Table 1: Data collected at the 5 sampling sites

Site 1 (1.2 km from source): Average Velocity = 0.28 m/s; Average Pebble Size (long axis) = 14.2 cm; Average Roundness Score = 1.8
Site 2 (3.5 km from source): Average Velocity = 0.35 m/s; Average Pebble Size (long axis) = 11.5 cm; Average Roundness Score = 2.4
Site 3 (6.1 km from source): Average Velocity = 0.48 m/s; Average Pebble Size (long axis) = 8.1 cm; Average Roundness Score = 3.1
Site 4 (9.0 km from source): Average Velocity = 0.42 m/s; Average Pebble Size (long axis) = 4.3 cm; Average Roundness Score = 4.2
Site 5 (11.8 km from source): Average Velocity = 0.59 m/s; Average Pebble Size (long axis) = 1.9 cm; Average Roundness Score = 4.9

(Note: Roundness was scored using Powers' Scale of Roundness, where 1 = Very Angular and 6 = Well-Rounded)

(d) (i) Identify the site that is anomalous to the trend proposed in Hypothesis 1 (velocity increases downstream). Explain your choice using data from Table 1. [3 marks]

(d) (ii) State a conclusion for Hypothesis 1. Support your answer with evidence from Table 1. [3 marks]

(e) Use the data in Table 1 to evaluate Hypothesis 2: Bedload particles become smaller and more rounded downstream. Use values to support your evaluation. [4 marks]

(f) Explain the river processes that cause bedload to change in size and shape downstream. [4 marks]

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解題

(a) (i) Wear sturdy or waterproof footwear (such as wellington boots or waders) to prevent slipping on wet rocks or cutting feet on debris. Do not enter the river if it is in flood or if the depth exceeds knee height. Wash hands thoroughly after fieldwork to prevent water-borne disease (such as Weil's disease).

(a) (ii) Accessibility: ensure there is safe public access to the water's edge. Even spacing of sites along the river's course to capture changes representatively. Avoidance of artificially modified areas (such as concrete channels or weirs) which disrupt natural river processes.

(b) (i) Place the flow meter's propeller/impeller so that it faces upstream directly into the flow. Ensure the rod/pole is held completely vertical. Stand downstream or to the side of the meter so that the body does not block or redirect the water flow. Hold the impeller at a consistent depth (such as 60% of the river depth). Record the digital reading of velocity (in m/s) on the display over a standard time duration (such as 30 seconds). Take multiple readings across a cross-section of the river and average them.

(b) (ii) A flow meter measures velocity below the surface where friction from wind is less, rather than just the surface velocity. It is unaffected by surface wind or surface debris which can artificially accelerate or decelerate a floating object. It reduces human error associated with starting and stopping a stopwatch when using a float.

(c) (i) Lay a tape measure across the river channel from bank to bank at the site. Select a pebble at equal, systematic intervals (such as every 50 cm) along the tape. To avoid bias (such as choosing more colourful, smoother, or larger pebbles), select the exact pebble that is touched by the index finger when closing eyes and reaching down to the river bed. Repeat until 20 pebbles are collected across the cross-section.

(c) (ii) Use callipers or a ruler to measure the longest dimension (long axis) of the pebble in centimetres. To assess roundness, compare each pebble to a visual Powers' Scale of Roundness chart which illustrates different classes from very angular (score of 1) to well-rounded (score of 6), and assign a corresponding number.

(d) (i) Site 4 is the anomaly. Explanation: Although Site 4 is further downstream (9.0 km from the source) than Site 3 (6.1 km), its average velocity drops to 0.42 m/s, which is lower than the 0.48 m/s recorded at Site 3. This contradicts the hypothesis that velocity increases continuously downstream.

(d) (ii) Conclusion: Hypothesis 1 is partially supported. Overall, velocity does increase from near the source (0.28 m/s at Site 1, 1.2 km) to the lowest site (0.59 m/s at Site 5, 11.8 km). However, the trend is not continuous due to the anomaly at Site 4 where velocity drops to 0.42 m/s.

(e) Hypothesis 2 is fully supported. Pebble size decreases consistently downstream from 14.2 cm at Site 1 (1.2 km) to 1.9 cm at Site 5 (11.8 km). Simultaneously, pebble roundness increases consistently downstream from an average score of 1.8 at Site 1 to 4.9 at Site 5, indicating pebbles become smoother and more rounded.

(f) Attrition occurs as pebbles collide with one another and with the river bed/banks during transport, chipping off sharp edges and reducing particle size over time. Abrasion occurs when bedload scrapes along the river bed and banks, wearing both down and smoothing the particles. Solution dissolves soluble rocks like limestone, reducing particle size. These physical and chemical processes act continuously over distance, making bedload smaller and more rounded downstream.

評分準則

(a) (i) 1 mark per valid precaution (max 2). Allow: wear safety boots/waders, avoid deep/fast-flowing water, check weather forecast/avoid flood risk, work in groups, wash hands. Reject: generic 'be careful'.

(a) (ii) 1 mark per valid factor (max 2). Allow: safety/accessibility, representation/even spacing, natural flow (no canalisation/weirs), permission to access private land.

(b) (i) 1 mark per point of method (max 4). Allow: impeller faces upstream (1), hold rod vertically (1), stand downstream/to the side (1), submerge to consistent depth (1), record reading on digital screen over set time (1), repeat across channel and average (1).

(b) (ii) 1 mark per comparison (max 2). Allow: flow meter measures below the surface/not affected by wind (1), flow meter is automated/no human stopwatch error (1).

(c) (i) 1 mark per point of systematic method (max 3). Allow: lay transect line/tape bank-to-bank (1), choose pebbles at regular intervals (1), unbiased selection method e.g. finger touch with eyes closed (1).

(c) (ii) 1 mark for size method (use callipers/ruler to measure long axis) (1). 1 mark for roundness method (compare with Powers' Scale chart/visual comparison) (1). 1 mark for detail of scoring/recording (assign 1-6 score) (1).

(d) (i) 1 mark for identifying Site 4 (1). 2 marks for explanation using comparative data: Site 4 is at 9.0 km with 0.42 m/s, which is slower than Site 3 (6.1 km) at 0.48 m/s (2).

(d) (ii) 1 mark for conclusion (partially supported) (1). 2 marks for data support: overall increase from 0.28 m/s at Site 1 (1.2 km) to 0.59 m/s at Site 5 (11.8 km) (1), but interrupted by decrease at Site 4 (1).

(e) 1 mark for conclusion (fully supported) (1). 1 mark for size data: decreases from 14.2 cm (Site 1) to 1.9 cm (Site 5) (1). 1 mark for roundness data: increases from 1.8 (Site 1) to 4.9 (Site 5) (1). 1 mark for matching distances/sites to both sets of data (1).

(f) 1 mark per explained process (max 4). Attrition: particles collide with each other, chipping off edges and reducing size (1). Abrasion: particles scrape against bed/banks, smoothing them (1). Solution: water dissolves soluble minerals (1). Downstream transport allows these processes more time/distance to operate (1).

題目 2 · Fieldwork Hypothesis & Investigation Question

30 分

Urban Environmental Quality and Traffic Investigation

Students in a city geography class investigated how environmental quality and traffic levels vary across different urban zones along a transect from the Central Business District (CBD) to the rural-urban fringe.

They formulated two hypotheses:

Hypothesis 1: Environmental quality improves as distance from the CBD increases.
Hypothesis 2: Traffic congestion is highest in the CBD and decreases towards the rural-urban fringe.

Answer the following questions based on this fieldwork:

(a) (i) Before beginning their fieldwork, the students carried out a pilot study. Explain what a pilot study is and why it is useful in fieldwork preparation. [3 marks]

(a) (ii) The students decided to use a systematic sampling method to select 10 survey points along a transect line. Explain how they would select these points using systematic sampling. [3 marks]

(b) (i) To test Hypothesis 1, the students used an environmental quality index (EQI) sheet at each survey point. Design a bipolar EQI sheet that the students could use. Show three different environmental criteria, using a scoring scale from -2 to +2. [3 marks]

(b) (ii) Suggest one advantage and one disadvantage of using an Environmental Quality Index (EQI) to measure environmental quality. [2 marks]

(c) (i) To test Hypothesis 2, the students conducted traffic counts. Describe how they would organize and conduct a reliable 10-minute traffic count at each survey point. [4 marks]

(c) (ii) Suggest how the time of day when the traffic count is conducted could affect the reliability of the results, and explain how the students could control for this. [3 marks]

Table 2: Environmental Quality and Traffic Data

Site 1 (CBD, 0.5 km from center): Average EQI score = -4; Traffic count = 48 vehicles/min
Site 2 (Inner City, 2.0 km from center): Average EQI score = -2; Traffic count = 35 vehicles/min
Site 3 (Transition Zone, 4.5 km from center): Average EQI score = +1; Traffic count = 18 vehicles/min
Site 4 (Suburbs, 7.0 km from center): Average EQI score = +5; Traffic count = 12 vehicles/min
Site 5 (Urban-Rural Fringe, 9.5 km from center): Average EQI score = +3; Traffic count = 5 vehicles/min

(Note: Maximum possible EQI score is +6, minimum is -6)

(d) (i) Explain how the environmental quality score of Site 5 (+3) represents an anomaly to the general trend of Hypothesis 1. Suggest one geographic reason for this anomaly at the urban-rural fringe. [3 marks]

(d) (ii) Evaluate Hypothesis 1 (environmental quality improves with distance from CBD) using the data in Table 2. [4 marks]

(d) (iii) Evaluate Hypothesis 2 (traffic congestion decreases with distance from CBD) using the data in Table 2. [3 marks]

(e) Suggest two ways the students could extend their investigation to gather more data on traffic and its impacts in the city. [2 marks]

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解題

(a) (i) A pilot study is a small-scale trial run of the investigation methods conducted before the main fieldwork. It is useful to test the equipment to ensure it works, check if the proposed duration (e.g., 10 minutes) for traffic counts is appropriate, identify potential safety hazards, and practice scoring environmental criteria to ensure consistency across the student team.

(a) (ii) First, determine the total distance of the transect (e.g., 9.5 km). Divide this total distance by 9 (the number of intervals between 10 sites) to determine the regular sampling interval (approx. 1.05 km). Use a map of the city to locate and mark a sampling point exactly every 1.05 km along the transect line, beginning from the CBD center.

(b) (ii) Advantage: Quick and simple to complete, generating quantitative data that can be easily compared and plotted on graphs. Disadvantage: Subjective, because different students may have different opinions and assign different scores to the same site.

(c) (i) Work in pairs where one student acts as the observer (calling out vehicles) and the other records the tallies on a recording sheet. Stand in a safe location near the curb with a clear view of both directions of the road. Use a stopwatch to ensure the count is exactly 10 minutes. Count all passing motorized vehicles (e.g., cars, buses, trucks, motorcycles) during the 10 minutes and calculate the average per minute by dividing the total by 10.

(c) (ii) Traffic levels change dramatically depending on the time of day, peaking during morning/evening rush hours and dropping in the mid-day off-peak period. If counts are taken at different times at different sites, the comparison is invalid. Control: Conduct the traffic counts simultaneously at all 10 sites using different groups of students, or conduct all counts during a designated off-peak hour (e.g., 11:00 to 12:00) on weekdays.

(d) (i) Anomaly: Site 5 (9.5 km) has an EQI score of +3, which is lower than Site 4 (7.0 km) which has a score of +5. This breaks the general trend of continuous improvement. Geographic reason: The urban-rural fringe often contains developments such as major road junctions/bypasses, landfills, quarries, or out-of-town retail parks that increase local noise, litter, or visual pollution.

(d) (ii) Evaluation: Hypothesis 1 is partially supported. Environmental quality generally increases with distance from the CBD, rising from -4 at Site 1 (0.5 km) to -2 at Site 2 (2.0 km), +1 at Site 3 (4.5 km), and peaking at +5 at Site 4 (7.0 km). However, the trend is not continuous due to the decrease to +3 at Site 5 (9.5 km).

(d) (iii) Evaluation: Hypothesis 2 is fully supported. Traffic counts decrease consistently as distance from the CBD increases. At 0.5 km (Site 1), traffic is 48 vehicles/min, dropping to 35 vehicles/min at 2.0 km (Site 2), 18 vehicles/min at 4.5 km (Site 3), 12 vehicles/min at 7.0 km (Site 4), and only 5 vehicles/min at 9.5 km (Site 5).

(e) Extensions: Measure pedestrian footfall counts at each site to see if pedestrian density correlates with vehicle traffic; use decibel meters to collect precise, objective noise level data; use air quality sensors to measure particulate matter (PM2.5); conduct surveys/questionnaires with local residents about their experiences with traffic congestion.

評分準則

(a) (i) 1 mark for defining a pilot study (trial run/test) (1). 2 marks for usefulness (max 2): test equipment/sheets (1), identify safety issues/access (1), refine sampling interval/timings (1), standardise scoring (1).

(a) (ii) 1 mark for measuring total distance on map (1). 1 mark for dividing distance by number of intervals to get a regular spacing (1). 1 mark for locating/selecting points at these exact regular intervals along the transect (1).

(b) (i) 1 mark for clear bipolar scale structure (showing negative, neutral, and positive values, e.g. -2 to +2) (1). 2 marks for showing three appropriate criteria with descriptions at extremes (e.g., Litter, Noise, Air quality) (2).

(b) (ii) 1 mark for advantage: easy to turn into graphs/quantifiable, fast to complete (1). 1 mark for disadvantage: subjective/open to bias, scores may vary between students (1).

(c) (i) 1 mark per point of method (max 4): work in pairs/groups (1), use a stopwatch to time exactly 10 minutes (1), tally passing vehicles on a recording sheet (1), stand in a safe place on the pavement (1), calculate average per minute (1).

(c) (ii) 1 mark for identifying how time of day affects traffic volume (e.g., peak vs. off-peak hours) (1). 1 mark for explaining why this makes results unreliable if times differ (1). 1 mark for control method (e.g., perform counts simultaneously or at a standardised off-peak time) (1).

(d) (i) 1 mark for stating that Site 5's EQI score of +3 is lower than Site 4's score of +5, breaking the upward trend (1). 2 marks for geographic reason (max 2): presence of major roads/bypasses (1), out-of-town retail parks/industry (1), waste disposal/quarrying at the rural-urban fringe (1).

(d) (ii) 1 mark for conclusion (partially supported) (1). 2 marks for supporting data showing general increase from Site 1 (-4 at 0.5 km) to Site 4 (+5 at 7.0 km) (2). 1 mark for identifying the decline at Site 5 (+3 at 9.5 km) using data (1).

(d) (iii) 1 mark for conclusion (fully supported) (1). 2 marks for supporting data showing consistent decrease from 48 vehicles/min (0.5 km) to 35 (2.0 km), 18 (4.5 km), 12 (7.0 km), and 5 (9.5 km) (2).

(e) 1 mark per valid extension (max 2). Allow: pedestrian counts, decibel meter measurements, air pollution sensors, resident questionnaires/interviews.

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