📚 Year 8 WJEC Geography: Case Study Practical Drill | 八年级 WJEC 地理：案例分析实战演练
In this drill, you will work through a real-world case study step by step, just like a geographer. We will use the example of Tropical Cyclone Idai, which struck southeast Africa in 2019. You will analyse the causes, effects, and responses, building the skills you need for WJEC assessments.
在这项实战演练中，你将像地理学家一样，逐步分析一个真实世界的案例。我们将以 2019 年袭击非洲东南部的热带气旋“伊代”为例。你将分析其成因、影响和应对措施，培养应对 WJEC 评估所需的技能。
1. Introducing the Case Study | 案例引入
Tropical Cyclone Idai formed in the Indian Ocean in early March 2019 and made landfall near Beira, Mozambique, on 14 March. It brought winds over 195 km/h, torrential rain, and catastrophic flooding to Mozambique, Malawi, and Zimbabwe. This case study allows you to explore how a powerful natural hazard interacts with human and physical geography.
热带气旋“伊代”于 2019 年 3 月初在印度洋生成，并于 3 月 14 日在莫桑比克贝拉附近登陆。它带来了超过 195 公里/小时的狂风、倾盆大雨和灾难性的洪水，波及莫桑比克、马拉维和津巴布韦。这个案例可以帮你探究强大的自然灾害如何与人文和自然地理环境相互作用。
2. Understanding the Hazard: How Cyclones Form | 认识灾害：气旋如何形成
Cyclones are intense low-pressure systems that form over warm tropical oceans. Sea surface temperatures above 26.5 °C provide the energy. Warm, moist air rises rapidly, creating an area of very low pressure. The Earth’s rotation causes the system to spin, and when wind speeds exceed 119 km/h, it is classified as a tropical cyclone.
气旋是在温暖的赤道海洋上空形成的强烈低压系统。海面温度超过 26.5 °C 为它提供能量。暖湿空气迅速上升，形成一片极低的低压区。地球自转使该系统旋转，当风速超过 119 公里/小时，就被划定为热带气旋。
Cyclone Idai intensified because the Mozambique Channel had unusually warm water at the time. The system also moved slowly after landfall, dumping over 600 mm of rain in some areas. These conditions turned a tropical storm into a devastating event.
气旋“伊代”之所以增强，是因为当时莫桑比克海峡的海水异常温暖。系统在登陆后移动缓慢，导致部分地区降雨量超过 600 毫米。这些条件使一场热带风暴演变成毁灭性事件。
3. Physical Causes and Contributing Factors | 自然成因与促成因素
The primary physical cause was the warm ocean surface (28–30 °C) combined with low wind shear, allowing the storm to strengthen. The geography of the port city of Beira also played a role: its location on a low-lying coastal plain, close to river deltas, made it extremely vulnerable to storm surges and flooding.
主要自然原因是温暖的洋面（28–30 °C）以及低风切变，使得风暴得以增强。港口城市贝拉的地理位置也起了作用：它位于低洼的沿海平原，靠近河流三角洲，极易受到风暴潮和洪水的侵袭。
Additionally, the Pungwe and Buzi rivers burst their banks, causing inland flooding that covered thousands of square kilometres. Deforestation in the river catchments had reduced the land’s ability to absorb water, worsening the flood peak.
此外，蓬圭河和布兹河决堤，导致内陆洪水泛滥，淹没了数千平方公里土地。河流集水区的森林砍伐降低了土地吸收水分的能力，加剧了洪峰。
4. Human Causes of Vulnerability | 脆弱性的人为成因
Mozambique is a low-income country, and many people lived in poorly constructed homes made of mud bricks and thatch. These dwellings could not withstand high winds or floods. High population density around Beira and poor drainage in informal settlements increased exposure to the hazard.
莫桑比克是一个低收入国家，许多人居住在由泥砖和茅草建成的简陋房屋中。这些住所无法承受强风或洪水。贝拉周围的人口密度高，以及非正规居住区排水不畅，增加了灾害暴露度。
Limited early warning systems and communication infrastructure meant that many residents did not receive evacuation alerts in time. Only a fraction of the population had access to cyclone shelters. Economic underdevelopment turned a natural event into a human disaster.
预警系统和通讯基础设施有限，意味着许多居民未能及时收到疏散警报。只有一小部分居民可以使用气旋避难所。经济发展不足使一场自然事件演变成人类灾难。
5. Primary Effects on People | 对人民的直接影响
The cyclone killed over 1,000 people across the three countries, with hundreds of thousands displaced. In Mozambique alone, more than 1.8 million people were affected. Many families lost their homes, crops, and livestock, leaving them without food or shelter.
这场气旋在三个国家共造成 1000 多人死亡，数十万人流离失所。仅在莫桑比克，就有超过 180 万人受灾。许多家庭失去了房屋、庄稼和牲畜，无食果腹、无处藏身。
An outbreak of cholera followed within weeks because floodwater contaminated drinking sources. Medical facilities were destroyed or overwhelmed. Children missed months of school, and the psychological impact on survivors was severe.
几周内爆发了霍乱，因为洪水污染了饮用水源。医疗设施被毁或不堪重负。儿童数月无法上学，幸存者的心理创伤十分严重。
6. Primary Effects on the Environment | 对环境的直接影响
Vast areas of fertile farmland were submerged under stagnant water, destroying the harvest and leaving soils waterlogged. The floodwater carried sewage, chemicals, and debris, polluting rivers and coastal ecosystems. Mangrove forests in the estuary were damaged by storm surges and debris, affecting fish breeding grounds.
大片肥沃的农田被积水淹没，收成尽毁，土壤渍涝。洪水夹带着污水、化学物质和残骸垃圾，污染了河流和沿海生态系统。河口处的红树林被风暴潮和杂物损坏，影响了鱼类繁殖地。
Landslides occurred in the highlands of Zimbabwe, blocking roads and damaging mountain forests. The long-term loss of vegetation increased the risk of soil erosion in the following dry season.
津巴布韦高地发生山体滑坡，阻塞道路，破坏山地森林。长期植被损失增加了后续旱季土壤侵蚀的风险。
7. Secondary Effects and Long-Term Impact | 间接影响与长期冲击
Secondary effects included food shortages and rising food prices beyond the flooded areas. The destruction of the Beira port, a vital trade gateway for landlocked nations, disrupted supply chains across southern Africa. Many small businesses failed, and unemployment rose sharply.
间接影响包括食物短缺以及洪水区外食品价格的上涨。作为内陆国家重要贸易门户的贝拉港被毁，扰乱了整个南部非洲的供应链。许多小企业倒闭，失业率急剧上升。
On a longer scale, the loss of infrastructure set back development by years. Roads, bridges, and power lines needed complete reconstruction. Girls in particular faced increased risks of dropping out of school permanently due to economic pressures.
从长远来看，基础设施的损毁使发展倒退数年。道路、桥梁和电线需要全面重建。由于经济压力，女孩尤其面临着永久辍学的更高风险。
8. Immediate Responses and Rescue Efforts | 即时响应与救援工作
Governments, UN agencies, and NGOs launched rescue operations using helicopters and boats. Temporary shelters were set up in stadiums and schools. The Red Cross and Doctors Without Borders provided emergency medical care and clean water.
各国政府、联合国机构和非政府组织利用直升机和船只展开救援行动。临时避难所搭建在体育场和学校内。红十字会和“无国界医生”提供了紧急医疗和清洁水。
Search and rescue teams faced huge challenges because floodwaters covered roads and cut off entire villages. The slow initial government response was criticised, highlighting weaknesses in disaster preparedness.
搜救队面临巨大挑战，因为洪水淹没了道路，切断了整个村庄与外界的联系。政府初期反应迟缓受到批评，暴露出备灾工作的薄弱之处。
9. Long-Term Recovery and Mitigation | 长期恢复与减灾
Long-term recovery focused on ‘building back better’: constructing cyclone-resistant houses, reinforcing river embankments, and developing improved early warning systems. International donors pledged over US$1 billion for reconstruction.
长期恢复工作的重点是“重建得更好”：建造抗气旋房屋，加固河堤，并发展更完善的预警系统。国际捐助方承诺了超过 10 亿美元用于重建。
Reforestation projects were launched in catchment areas to reduce future flood risk. Schools integrated disaster risk reduction into the curriculum. Despite these efforts, many communities remain vulnerable due to poverty and climate change.
在集水区启动了重新造林项目，以减少未来的洪水风险。学校将减少灾害风险纳入课程。尽管付出了这些努力，但由于贫困和气候变化，许多社区仍然十分脆弱。
10. Using Data and Maps in the Case Study | 在案例中使用数据和地图
In WJEC examinations, you may be asked to interpret maps, satellite images, or data tables related to Cyclone Idai. Practice by reading a map of the storm track, noting the location of Beira and the size of the flooded area. Use the table below to calculate the differences in rainfall.
在 WJEC 考试中，你可能会被要求解读与气旋“伊代”有关的地图、卫星图像或数据表。你可以通过阅读风暴路径图、标注贝拉的位置以及洪水泛滥区的大小来练习。使用下表计算降雨量差异。
| Location | 地点 | Rainfall (mm) | 降雨量 | Wind Speed (km/h) | 风速 |
|---|---|---|
| Beira, Mozambique | 莫桑比克贝拉 | 450 | 195 |
| Chimanimani, Zimbabwe | 津巴布韦奇马尼马尼 | 600 | 150 |
| Blantyre, Malawi | 马拉维布兰太尔 | 300 | 120 |
Use this data to describe the spatial pattern of the cyclone’s impact and suggest reasons why inland areas received more rainfall. Remember to support each point with specific evidence from the table.
利用这些数据描述气旋影响的空间分布格局，并解释为什么内陆地区降雨量更多的原因。记住要用表格中的具体证据来支持每一点。
11. Practising Your Extended Answer Skills | 练习长篇答题技巧
A typical WJEC question might ask you to ‘evaluate the extent to which the effects of Cyclone Idai were made worse by human factors.’ Start by stating your overall view, then give two or three well-developed reasons using the PEE structure (Point, Evidence, Explanation).
一道典型的 WJEC 题目可能会问“评估人为因素在多大程度上加剧了气旋‘伊代’的影响”。开始时先陈述你的总体看法，然后运用 PEE 结构（观点、证据、解释）给出两到三个充分展开的理由。
For example: ‘Deforestation increased flood severity (Point). Satellite data showed that catchment forest cover had fallen by 20% (Evidence). This meant less interception of rainfall, so more water reached the river channels quickly, causing higher flood peaks (Explanation).’
例如：“森林砍伐加剧了洪水的严重程度（观点）。卫星数据显示集水区森林覆盖率下降了 20%（证据）。这意味着对降雨的截留减少，因此更多的水快速流入河道，造成更高的洪峰（解释）。”
Practice linking short-term effects to long-term development setbacks and always refer back to the specific location to show your geographical knowledge.
练习将短期影响与长期发展倒退联系起来，并始终回到具体地点，以展示你的地理知识。
12. Self-Assessment Checklist for Case Study Drills | 案例分析实战自评清单
Use this checklist after completing your practice answers to ensure you are exam-ready. Tick off each point you have included. This will help you build a complete, high-scoring response.
在完成练习答案后，使用这份清单来确保你做好了考试准备。对已包含的每一点打勾。这将帮助你把回答写得完整并且拿高分。
- I named the specific cyclone and its date | 我点明了具体气旋名称及日期
- I described at least two physical causes | 我描述了至少两个自然成因
- I explained human causes of vulnerability | 我解释了脆弱性的人为成因
- I separated primary and secondary effects | 我区分了直接影响和间接影响
- I included impacts on people and the environment | 我涵盖了给人民和环境带来的影响
- I discussed immediate and long-term responses | 我讨论了即时和长期响应措施
- I used specific place names and data | 我使用了具体地名和数据
- I answered the exact command word (describe, explain, evaluate) | 我回应了确切的指令词（描述、解释、评估）
Regular drilling with a clear self-assessment routine will improve your confidence and your ability to handle any WJEC case study question that comes your way.
遵循清晰的自评常规进行反复练习，将提升你的信心，并提高你应对 WJEC 任何案例分析题目的能力。
Published by TutorHao | Geography Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导Cancel reply