📚 AQA Geography Year 9: Key Terminology Quick-Reference Guide | AQA 9年级地理：关键术语速记指南
Mastering key terms is the first step towards success in AQA Geography. This guide breaks down essential vocabulary you will encounter in Year 9, covering both physical and human topics. Each term is defined in English and then explained in Chinese, helping you build a bilingual understanding of geographical concepts. Use this as a quick-reference tool to boost your confidence before tests and to deepen your knowledge of the world around you.
掌握关键术语是学好AQA地理的第一步。本指南梳理了9年级会遇到的核心词汇，涵盖自然地理和人文地理两大板块。每个术语先用英文定义，再用中文解释，帮助你建立地理概念的双语理解。把它当作考前速查工具，既能提升应试信心，也能加深对周围世界的认识。
1. Tectonic Hazards | 构造灾害
Crust: The outermost solid layer of the Earth, ranging from about 5 km to 70 km in thickness. The crust is broken into large pieces called tectonic plates that float on the semi-molten mantle beneath.
地壳：地球最外层的固体圈层，厚度约5至70公里不等。地壳破裂成许多巨大的板块，漂浮在下方的半熔融地幔之上。
Plate boundary: The margin where two tectonic plates meet. Movements at these boundaries can be destructive (plates collide), constructive (plates move apart), or conservative (plates slide past each other). Earthquakes and volcanoes are often concentrated along plate boundaries.
板块边界：两个板块相接的边缘地带。板块边界的运动可以是破坏性的（板块碰撞）、建设性的（板块分离）或守恒型的（板块水平滑动）。地震和火山活动往往集中在板块边界附近。
Epicentre: The point on the Earth’s surface directly above the focus of an earthquake. The shaking is usually strongest here, and the term is often misunderstood as the origin of the quake itself.
震中：地震震源垂直投影到地表的点。震中地区的震动通常最为剧烈，这个术语常被误认为是地震发生的位置本身。
2. Weathering and Erosion | 风化与侵蚀
Weathering: The breakdown of rocks in situ—meaning they are not moved from their original position. This can be physical (freeze-thaw), chemical (acid rain), or biological (roots widening cracks). Weathering weakens rock, preparing it for erosion.
风化：岩石在原地的崩解过程，岩石本身并不发生移动。可分为物理风化（冻融作用）、化学风化（酸雨）和生物风化（植物根系撑裂）。风化使岩石变弱，为侵蚀创造条件。
Erosion: The wearing away and removal of rock and soil by agents such as running water, ice, wind, and waves. Unlike weathering, erosion involves movement. The four main processes of river erosion are hydraulic action, abrasion, attrition, and solution.
侵蚀：流水、冰川、风、波浪等营力对岩石和土壤的磨损和搬运作用。与风化不同，侵蚀包含物质移动。河流侵蚀的四种主要方式是水力作用、磨蚀、磨圆和溶蚀。
Mass movement: The downhill movement of rock and soil under the influence of gravity. Examples include landslides, rockfalls, and slumping. Water and undercutting by rivers or the sea can trigger mass movement.
块体运动：岩石和土壤在重力作用下沿坡向下的运动，如山体滑坡、岩崩和坍塌。河流或海浪的掏蚀以及水分渗入都可以触发块体运动。
3. River Processes and Landforms | 河流作用与地貌
Drainage basin: An area of land drained by a river and its tributaries. The boundary of the basin is called the watershed. Any rain falling inside the watershed will eventually flow into the main river channel.
流域：一条河流及其支流所排水的集水区域。流域的边界称为分水岭。落在分水岭以内的雨水最终会汇入主河道。
V-shaped valley: A typical feature of a river’s upper course, formed by vertical erosion. The river cuts downwards while weathering and mass movement widen the slopes, creating a valley with steep sides and a narrow floor.
V形谷：河流上游的典型地貌，由下蚀作用形成。河流向下深切，同时风化和块体运动使谷坡展宽，形成谷壁陡峭、谷底狭窄的V字形状。
Meander: A pronounced bend in a river’s middle or lower course. Erosion occurs on the outer bank (forming a river cliff) while deposition takes place on the inner bank (forming a slip-off slope). Over time, meanders become more sinuous.
曲流：河流中下游明显的河弯。水流在凹岸发生侵蚀（形成河蚀崖），在凸岸发生堆积（形成边滩）。随着时间推移，曲流会变得更加弯曲。
4. Coastal Landscapes | 海岸地貌
Fetch: The distance of open water over which the wind blows to generate waves. A longer fetch and stronger wind generally produce larger, more powerful waves that have greater erosive energy.
风区长度：风在开阔水面上吹过并形成波浪的距离。风区越长、风力越强，通常会产生更大、更有力的波浪，携带更多侵蚀能量。
Headland and bay: Formed where alternating bands of hard and soft rock meet the coast at right angles. Soft rock erodes more quickly, forming a bay, while harder rock juts out as a headland. Over time, headlands can be further sculpted into caves, arches, and stacks.
岬角与海湾：当抗蚀力不同的硬岩和软岩与海岸垂直交替分布时，软岩侵蚀更快，形成海湾，硬岩则突出为岬角。随着时间推移，岬角可进一步被塑造成海蚀洞、海蚀拱和海蚀柱。
Longshore drift: The zigzag movement of sediment along a coastline, caused by waves approaching the shore at an angle. Swash moves material up the beach at an angle, and backwash drags it straight down the slope, gradually shifting sediment parallel to the shore.
沿岸漂移：沿海岸线呈之字形移动沉积物的过程，由波浪斜向拍击海岸引起。冲流以一定角度将物质推上海滩，回流则直接沿坡向下拖拽，从而使沉积物逐渐沿海岸平行移动。
5. Climate and Weather | 气候与天气
Weather: The day-to-day state of the atmosphere in a particular place, including temperature, precipitation, wind speed, and cloud cover. Weather can change rapidly and is measured over short time scales.
天气：某一地点大气逐日的状况，包括气温、降水、风速和云量等。天气变化迅速，是在短时间尺度内测量的。
Climate: The long-term average of weather patterns in an area, typically calculated over at least 30 years. Climate determines the typical conditions we expect for a region, such as the UK’s temperate maritime climate.
气候：某一区域天气状况的长期平均值，通常至少基于30年的数据计算。气候决定了一个地区的典型状态，例如英国属于温带海洋性气候。
Pressure system: An area of high or low atmospheric pressure that influences weather. Low-pressure systems (depressions) often bring cloud, rain, and wind, while high-pressure systems (anticyclones) are associated with settled, dry weather and clear skies.
气压系统：影响天气的高压或低压区域。低压系统（气旋）常带来云、雨和风，而高压系统（反气旋）则与稳定、干燥和晴朗的天气相关。
6. Ecosystems and Biomes | 生态系统与生物群系
Ecosystem: A natural system made up of living organisms (plants, animals, and decomposers) and their non-living environment (soil, water, climate). The components are linked through nutrient cycles and food webs. A pond or a woodland can be thought of as a small-scale ecosystem.
生态系统：由生物成分（植物、动物和分解者）与非生物环境（土壤、水、气候）共同组成的自然系统。各组成部分通过养分循环和食物网联系在一起。一个池塘或一片林地都可看作小型生态系统。
Biome: A very large-scale ecosystem that has a distinctive climate, soil, and vegetation type. Examples include tropical rainforests, deserts, tundra, and temperate deciduous forests. Biomes are often named after their dominant vegetation.
生物群系：具有独特气候、土壤和植被类型的大尺度生态系统。例如热带雨林、荒漠、苔原和温带落叶阔叶林。生物群系常以其优势植被命名。
Nutrient cycle: The movement and recycling of essential elements, such as nitrogen and carbon, between the living and non-living parts of an ecosystem. In a well-functioning ecosystem, the nutrient cycle maintains a balance that supports plant growth.
养分循环：必需元素（如氮和碳）在生态系统生物与非生物组分之间转移和再循环的过程。在健康的生态系统中，养分循环维持着支持植物生长的平衡状态。
7. Population and Migration | 人口与迁移
Population density: The average number of people per square kilometre. High population densities are found in cities and fertile agricultural areas, while deserts and mountain ranges tend to have low densities. It is calculated by dividing total population by total land area.
人口密度：每平方公里的平均人口数量。城市和肥沃的农业区人口密度高，而沙漠和山区往往密度较低。计算方法为总人口除以总土地面积。
Birth rate: The number of live births per 1000 people per year. A high birth rate is often linked to limited access to education and healthcare, whereas a low birth rate is typical of more developed countries.
出生率：每年每千人的活产婴儿数。高出生率常与教育和医疗资源有限相关，低出生率则多见于较发达国家。
Migration: The movement of people from one place to another with the intention of settling temporarily or permanently. Push factors drive people away from an area (e.g., war, lack of jobs), while pull factors attract them to a new place (e.g., better opportunities, safety).
迁移：人们以暂时或永久定居为目的，从一个地方移动到另一个地方。推动因素使人们离开某地（如战争、缺乏就业），拉动因素则吸引人们前往新地点（如更多机会、安全）。
8. Urbanisation and Cities | 城市化与城市
Urbanisation: The increase in the proportion of a country’s population living in towns and cities. Urbanisation is driven by rural-to-urban migration and natural population growth in urban areas. Over half the world’s population now lives in urban areas.
城市化：一个国家的城镇和城市人口比例增大的过程。驱动因素包括农村向城市迁移以及城市地区的人口自然增长。目前全球一半以上人口居住在城镇地区。
Megacity: A city with a population of more than 10 million people. Examples include Tokyo, Mumbai, and Mexico City. Megacities often face challenges such as overcrowding, pollution, and strain on housing and transport systems.
超大城市：人口超过1000万的城市，例如东京、孟买和墨西哥城。超大城市常面临过度拥挤、污染以及住房和交通系统压力等挑战。
Urban regeneration: The process of redeveloping run-down, often former industrial, areas within a city. Regeneration projects aim to attract new investment, create jobs, and improve the environment, such as the redevelopment of London’s Docklands.
城市更新：对城市内衰败区域（常为原工业区）进行再开发的过程。更新项目旨在吸引新投资、创造就业岗位并改善环境，如伦敦码头区的再开发。
9. Development and Sustainability | 发展与可持续性
Development: The process of improving people’s quality of life and economic well-being. Development is measured using indicators such as Gross Domestic Product (GDP) per capita, literacy rate, and life expectancy. It can also encompass social and political freedoms.
发展：提高人民生活质量与经济福祉的过程。衡量发展水平的指标包括人均国内生产总值、识字率和预期寿命等，还可涵盖社会和政治自由。
Sustainable development: Development that meets the needs of the present without compromising the ability of future generations to meet their own needs. It balances economic growth, social inclusion, and environmental protection.
可持续发展：既满足当代人的需求，又不损害后代人满足其自身需求的能力的发展。要求在经济增长、社会包容和环境保护之间取得平衡。
Ecological footprint: A measure of the land and water area required to produce the resources a population consumes and to absorb its waste. A larger ecological footprint means a greater environmental impact. Many high-income countries have footprints that exceed the Earth’s biocapacity.
生态足迹：衡量生产某一人口所消耗的资源以及吸收其废物所需的土地和水域面积的指标。生态足迹越大，环境影响越大。许多高收入国家的生态足迹已超过地球的生物承载力。
10. Resources and Energy | 资源与能源
Non-renewable resource: A resource that exists in a finite amount and cannot be replaced within a human timescale once used. Fossil fuels (coal, oil, natural gas) are non-renewable. Burning them releases carbon dioxide and contributes to climate change.
不可再生资源：储存量有限、使用后在人类时间尺度内无法再生的资源。化石燃料（煤、石油、天然气）即属于不可再生资源，燃烧时会释放二氧化碳，加剧气候变化。
Renewable resource: A resource that can be replenished naturally over a relatively short period. Examples include solar power, wind energy, wave power, and hydropower. These are often called ‘clean’ energy sources because they produce little or no greenhouse gas emissions during operation.
可再生资源：能在相对短时间内自然补充的资源，如太阳能、风能、波浪能和水力发电。它们常被称为“清洁”能源，因为在运行过程中几乎不产生温室气体排放。
Energy security: A country’s ability to secure a reliable, affordable supply of energy to meet its needs. Diversifying energy sources and reducing dependence on imported fossil fuels can improve energy security.
能源安全：一个国家确保可靠、可负担的能源供应以满足其需求的能力。能源来源多样化、减少对进口化石燃料的依赖，均可提升能源安全。
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