📚 IGCSE WJEC Geography: Unit Test Mock Paper Walkthrough | IGCSE WJEC 地理：单元测试模拟卷解析
This walkthrough takes you through a WJEC IGCSE Geography unit test mock paper, section by section. Each part includes a typical question style, key points for a model answer, and common mistakes to avoid. Use it to sharpen your exam technique and check your understanding of core themes.
本解析将逐节带你完成 WJEC IGCSE 地理单元测试模拟卷。每个部分都包含典型题型、高分答案要点和常见错误提醒。用它来提升你的考试技巧并查漏补缺核心主题。
1. Map Skills and Grid References | 地图技能与网格坐标
Question example: On a 1:25 000 OS map, a bus station is located at six-figure grid reference 674238. Explain what this reference means and how you would locate the feature.
题目示例：在 1:25 000 地形测量局地图上，公交站位于六位数网格坐标 674238。解释该坐标的含义以及你将如何定位该地物。
A six-figure grid reference pinpoints a location to within 100 m on the ground. Read the easting 67 first, then the northing 23, and add the third and sixth digits to divide each grid square into tenths.
六位数网格坐标可将地面位置精确到 100 米以内。先读取东距 67，再读取北距 23，然后加上第三位和第六位数字，将每个网格方格分成十等份。
Always remember ‘along the corridor and up the stairs’ – eastings before northings. This is one of the most common WJEC map skills questions, and marks are lost when candidates reverse the order.
始终记住 ‘先横后纵’——先读东距再读北距。这是 WJEC 地图技能最常见的题型之一，很多考生因顺序颠倒而丢分。
Common mistakes include forgetting to use the scale line to measure straight-line distance, ignoring contour lines when describing relief, and writing four-figure references when six figures are demanded.
常见错误包括：忘记使用比例尺测量直线距离；描述地形时忽略等高线；以及题目要求六位数坐标时只写了四位数坐标。
2. River Processes and Landforms | 河流过程与地貌
Question example: Explain the formation of an oxbow lake. You may use a diagram in your answer.
题目示例：解释牛轭湖的形成过程。你可以在答案中使用示意图。
An oxbow lake forms when a meander neck becomes very narrow. During high discharge, the river cuts through the neck by lateral erosion and hydraulic action, creating a straighter channel.
牛轭湖形成于曲流颈部变得非常狭窄时。在流量较大时，河流通过侧蚀和水力作用切穿颈部，形成较直的河道。
Deposition then seals off the old meander loop at both ends, leaving a crescent-shaped lake separated from the main channel. Over time the lake may fill with sediment and vegetation.
随后沉积作用将废弃曲流环的两端封堵，留下与主河道分离的新月形湖泊。随着时间推移，该湖可能被沉积物和植被填满。
Use sequence words like ‘first’, ‘then’ and ‘finally’ to show process. WJEC examiners award marks for correct geographical terminology such as lateral erosion, hydraulic action, abrasion and deposition.
使用 ‘首先’、’然后’ 和 ‘最后’ 等表示顺序的词来展示过程。WJEC 阅卷人会根据侧蚀、水力作用、磨蚀和沉积作用等正确地理术语给分。
A common mistake is to describe vertical erosion in the upper course, but oxbow lakes occur in the lower course where lateral erosion dominates. Make sure your explanation matches the location.
一个常见错误是描述上游的垂直侵蚀，但牛轭湖出现在下游，那里以侧蚀为主。确保你的解释与所在地段相符。
3. Coastal Erosion and Management | 海岸侵蚀与管理
Question example: Describe one hard engineering strategy used to manage coastal erosion and evaluate its effectiveness.
题目示例：描述一种用于管理海岸侵蚀的硬工程策略，并评价其有效性。
A sea wall is a concrete or rock barrier built at the back of the beach. It reflects wave energy and protects property behind it, but it is expensive to build and maintain.
海堤是建在海滩后方的混凝土或岩石屏障。它能反射波浪能量并保护后方财产，但建造和维护成本很高。
Sea walls can also cause increased erosion at the base of the wall and further along the coast because reflected waves scour the beach. This is called terminal scour.
海堤还可能导致堤脚及沿岸更远地区侵蚀加剧，因为反射波会冲刷海滩。这被称为末端冲刷。
Evaluation needs both advantages and disadvantages. For top marks, link the strategy to a specific named case study, such as the Holderness coast in England, where sea walls protect settlements like Hornsea.
评价需同时包含优点和缺点。要想获得高分，请将该策略与具体案例联系起来，例如英格兰霍尔德内斯海岸，海堤保护着霍恩西等定居点。
Soft engineering alternatives such as beach nourishment and managed retreat are often more sustainable, but they do not provide the same immediate protection to high-value property.
海滩养护和有管理后退等软工程替代方案通常更具可持续性，但它们无法为高价值财产提供同等的即时保护。
4. Population Change and the DTM | 人口变化与人口转变模型
Question example: Using the Demographic Transition Model, explain why death rate falls before birth rate in Stage 2.
题目示例：利用人口转变模型，解释为什么在第二阶段死亡率比出生率更早下降。
In Stage 2, death rate falls rapidly due to improved food supply, clean water, sanitation and medical care. Birth rate remains high because cultural and economic reasons change more slowly, so natural increase becomes high.
在第二阶段，由于粮食供应改善、清洁饮水、卫生设施和医疗保健的进步，死亡率迅速下降。出生率仍然很高，因为文化和经济因素变化较慢，因此自然增长率变高。
Include the formula for natural increase. It is calculated from the crude birth rate and crude death rate, both expressed per 1000 people per year.
写出自然增长率公式。它由粗出生率和粗死亡率计算得出，两者均以每年每千人表示。
Natural increase = (CBR − CDR) ÷ 10
自然增长 =（粗出生率 − 粗死亡率）÷ 10
This gives an annual percentage change. A common mistake is to forget to divide by 10, which would give an answer ten times too large.
这给出了年百分比变化。一个常见错误是忘记除以 10，这样结果会大十倍。
You should also be able to compare Stage 2 with Stage 4, where both birth and death rates are low and population growth is slow or even negative.
你还应该能够将第二阶段与第四阶段进行比较，在第四阶段出生率和死亡率都很低，人口增长缓慢甚至为负增长。
5. Settlement Hierarchy and Urbanisation | 聚落等级与城市化
Question example: Explain the differences between a high-order service and a low-order service. Use examples in your answer.
题目示例：解释高阶服务与低阶服务之间的差异。在答案中使用例子。
High-order services, such as hospitals and universities, have a high threshold population and a large range. Low-order services, such as convenience stores, require only a small threshold and are used frequently.
高阶服务（如医院和大学）具有较高的门槛人口和较大的服务范围。低阶服务（如便利店）只需较小的门槛人口，且使用频率高。
Urbanisation is the increase in the proportion of people living in towns and cities. In WJEC, be careful to distinguish urbanisation from urban growth, which is the absolute increase in urban population.
城市化是指居住在城市和城镇的人口比例增加。在 WJEC 考试中，注意区分城市化与城市增长，后者指城市人口的绝对增长。
When explaining settlement hierarchy, use the order: hamlet, village, small town, large town, city, conurbation. Each level has more services, larger sphere of influence and greater threshold population.
解释聚落等级时，使用以下顺序：小村、村庄、小镇、大镇、城市、城市群。每一级的服务数量更多、影响范围更大、门槛人口更高。
A common error is confusing threshold population with range. Threshold is the minimum number of people needed to support a service, while range is the maximum distance people are willing to travel to use it.
一个常见错误是混淆门槛人口与服务范围。门槛人口是支撑某项服务所需的最低人数，而服务范围是人们愿意前往使用该服务的最大距离。
6. Weather, Climate and Climate Graphs | 天气、气候与气候图
Question example: Describe the climate shown in Figure 2, a climate graph for a tropical rainforest location.
题目示例：描述图 2 所示的气候，该图是一个热带雨林地区的气候图。
The temperature is high all year, around 26–28 °C, with a small annual range. Rainfall is heavy every month, often above 200 mm, and there is no dry season.
全年气温高，约 26–28 °C，年较差小。每月降水量大，通常超过 200 毫米，没有干季。
When describing climate graphs, always quote data and identify both temperature and precipitation patterns. Avoid vague statements like ‘it is hot and wet’ unless supported by figures.
描述气候图时，务必引用数据并说明气温和降水规律。避免模糊表述，如 ‘又热又湿’，除非有数据支撑。
You may also be asked to explain climate using factors such as latitude, altitude, distance from the sea and prevailing winds. For example, tropical rainforests are hot because they are near the equator where the sun’s angle is high all year.
你还可能被要求利用纬度、海拔、距海远近和盛行风等因素解释气候。例如，热带雨林之所以炎热，是因为它们靠近赤道，全年太阳高度角都很大。
Common mistakes include describing seasons that do not exist in equatorial climates, failing to quote data, and not distinguishing between weather and climate.
常见错误包括描述赤道气候中不存在的季节、没有引用数据，以及没有区分天气和气候。
7. Ecosystems and Biomes | 生态系统与生物群落
Question example: Explain how plants in the tropical rainforest have adapted to high rainfall and poor soils.
题目示例：解释热带雨林中的植物如何适应高降雨量和贫瘠土壤。
Drip tips allow heavy rain to run off leaves quickly, preventing fungal growth. Buttress roots support tall trees in shallow soil, and leaf litter decomposes rapidly to recycle nutrients.
滴水叶尖使大雨迅速从叶片流下，防止真菌滋生。板根支撑浅层土壤中的高大树木，枯枝落叶快速分解以循环养分。
WJEC often asks for named adaptations, not general descriptions. Use terms like ‘drip tips’, ‘buttress roots’, ‘lianas’ and ‘epiphytes’ to gain marks.
WJEC 经常要求写出具体的适应特征，而不是笼统描述。使用 ‘滴水叶尖’、’板根’、’藤本植物’ 和 ‘附生植物’ 等术语以得分。
The nutrient cycle in the rainforest is very rapid. Most nutrients are stored in the biomass, not the soil, because heavy rain leaches minerals from the ground. This explains why cleared rainforest soils become infertile quickly.
热带雨林的养分循环非常迅速。大部分养分储存在生物量中，而不是土壤中，因为大雨会淋溶土壤中的矿物质。这解释了为何被砍伐后的雨林土壤会迅速变得贫瘠。
A common error is to write only ‘plants have big leaves to catch sunlight’. While true, this is too vague for WJEC. Specific adaptations with named functions earn higher marks.
一个常见错误是只写 ‘植物有大叶子来获取阳光’。虽然没错，但对 WJEC 来说过于笼统。写出具体适应特征及其功能才能获得更高分数。
8. Development Gap and Globalisation | 发展差距与全球化
Question example: Explain two causes of the development gap between high-income and low-income countries.
题目示例：解释高收入国家与低收入国家之间发展差距的两个原因。
Historical colonialism created unequal trade relationships that still affect many low-income countries. In addition, debt repayment takes money away from health and education, while natural hazards and climate vulnerability slow economic progress.
历史上的殖民主义造成了不平等的贸易关系，至今仍影响许多低收入国家。此外，债务偿还占用了卫生和教育资金，而自然灾害和气候脆弱性也减缓了经济进步。
Use specific indicators such as GNI per capita, literacy rate and life expectancy when comparing countries. For example, a low-income country may have GNI per capita below US$1,135 while a high-income country exceeds US$13,846.
比较国家时，应使用人均国民总收入、识字率和预期寿命等具体指标。例如，低收入国家的人均国民总收入可能低于 1,135 美元，而高收入国家则超过 13,846 美元。
Globalisation can reduce the gap through foreign direct investment and technology transfer, but it can also widen it where infrastructure is weak and profits are repatriated.
全球化可以通过外国直接投资和技术转让缩小差距，但在基础设施薄弱和利润被汇出的地方也可能扩大差距。
For higher marks, name a case study such as Nigeria, where oil revenue and foreign investment have brought growth but also inequality and environmental damage.
要想获得更高分，请举出尼日利亚等案例，该国石油收入和外国投资带来了增长，但也带来了不平等和环境破坏。
9. Resource Management and Sustainability | 资源管理与可持续发展
Question example: Assess the sustainability of using fossil fuels for energy production.
题目示例：评估使用化石燃料进行能源生产的可持续性。
Fossil fuels are currently reliable and energy-dense, but they are non-renewable and release greenhouse gases. Sustainable alternatives such as wind and solar have lower carbon emissions but require high initial investment and energy storage solutions.
化石燃料目前可靠且能量密度高，但不可再生且释放温室气体。风能和太阳能等可持续替代能源碳排放较低，但需要较高的初始投资和储能解决方案。
The phrase ‘assess’ means you must give a balanced judgement. Use the ‘advantages, disadvantages, conclusion’ structure and link to the UN Sustainable Development Goals where possible.
‘评估’ 意味着必须给出平衡判断。采用 ‘优点、缺点、结论’ 结构，并尽可能与联合国可持续发展目标联系起来。
For example, fossil fuels contribute to SDG 7 (affordable and clean energy) in the short term but undermine SDG 13 (climate action) in the long term. A just transition to renewables is therefore needed.
例如，化石燃料在短期内有助于实现可持续发展目标 7（经济适用的清洁能源），但长期来看会破坏目标 13（气候行动）。因此需要公正地向可再生能源过渡。
A common mistake is to describe fossil fuels without making a judgement. In an ‘assess’ question, the conclusion should directly answer whether the resource
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