📚 Year 8 CCEA Geography: Key Terms Memorisation Guide | CCEA 八年级地理：词汇术语速记指南
Mastering geographical vocabulary is the first step towards understanding the world around us. CCEA Year 8 Geography introduces many key terms across topics such as map skills, rivers, coasts, weather, population, and economic activities. This bilingual guide arranges essential terms by topic, with clear, concise explanations in English followed by Chinese translations to help you memorise them effectively.
掌握地理词汇是理解周围世界的第一步。CCEA 八年级地理涵盖了地图技能、河流、海岸、天气、人口和经济活动等主题中的许多关键术语。本双语指南按主题编排基本术语，提供简明的英文解释和中文翻译，帮助你高效记忆。
1. Map Skills Essentials | 地图技能基础
A four-figure grid reference locates a grid square on a map. A six-figure grid reference pinpoints a specific location within that square.
四位数网格坐标定位地图上的一个网格，六位数网格坐标精确定位该网格内的具体地点。
Scale shows the relationship between distance on a map and the corresponding distance on the ground. It can be expressed as a ratio (e.g. 1:50,000), a scale bar, or a statement (e.g. ‘1 cm represents 500 m’).
比例尺表示图上距离与相应地面距离的关系，可以用比率（如 1:50,000）、比例尺或语句（如“1 厘米代表 500 米”）表示。
Contour lines are brown lines joining points of equal height. Closely spaced contours indicate a steep slope, while widely spaced contours show gentle slopes.
等高线是连接相同高度点的棕色线条。等高线密集表示陡坡，等高线稀疏表示缓坡。
Lines of latitude run east-west and measure distance north or south of the Equator. Lines of longitude run north-south and measure distance east or west of the Prime Meridian.
纬线东西方向延伸，测量赤道以北或以南的距离。经线南北方向延伸，测量本初子午线以东或以西的距离。
2. Rivers & Fluvial Processes | 河流与流水作用
The source of a river is its starting point, often in upland areas. The mouth is where the river meets the sea or a lake.
河流的源头是其起点，通常位于高地。河口是河流汇入海洋或湖泊的地方。
Erosion is the wearing away of the land by water, wind, or ice. In rivers, hydraulic action, abrasion, attrition, and solution are key erosion processes.
侵蚀是水、风或冰对陆地的磨损。河流中的水力作用、磨蚀、磨耗和溶蚀是主要侵蚀过程。
Transportation moves eroded material downstream. Deposition happens when the river drops the material it carries, often in slower-flowing areas.
搬运将侵蚀物向下游移动。沉积发生在河流流速减缓时，所携带物质沉降下来。
A meander is a bend in a river. Over time, erosion on the outside of the bend and deposition on the inside form a pronounced loop.
曲流是河流的弯曲部分。在弯道外侧发生侵蚀、内侧发生沉积，逐渐形成明显的环状。
A floodplain is the flat land alongside a river that may be covered with water during a flood. Floodplains are created by repeated deposition of sediment.
河漫滩是沿河岸的平坦土地，洪水期间可能被淹没，由反复的沉积作用形成。
A waterfall forms where a river flows over a band of hard rock followed by softer rock. The soft rock erodes more quickly, creating a steep drop.
瀑布形成于河流流过一层硬岩后遇到软岩。软岩侵蚀更快，形成陡峭的落差。
3. Coasts & Coastal Landforms | 海岸与海岸地貌
A wave is a movement of energy through water. Destructive waves erode the coast, while constructive waves build up beaches.
波浪是能量在水中的传播。破坏性波浪侵蚀海岸，而建设性波浪堆积海滩。
A cliff is a steep rock face caused by erosion at the base by waves. A wave-cut notch forms at the foot, leading to collapse of the overhang.
悬崖是由波浪侵蚀基部形成的陡峭岩壁。崖底形成浪蚀凹槽，导致悬垂部分崩塌。
A beach is an accumulation of sand or pebbles along the shore, deposited by constructive waves.
海滩是由建设性波浪沉积在岸边的沙子或鹅卵石堆积体。
An arch is a natural opening through a headland formed by erosion, and a stack is an isolated pillar of rock left when the arch collapses.
拱门是海岬由侵蚀形成的天然孔洞；当拱门崩塌后留下的孤立岩柱称为海蚀柱。
Longshore drift is the movement of sediment along a coastline in a zigzag pattern, driven by waves approaching at an angle.
沿岸漂移是沉积物在波浪以一定角度拍岸时，以锯齿形方式沿海岸移动的过程。
4. Weather & Climate | 天气与气候
Weather is the day-to-day condition of the atmosphere, including temperature, rainfall, and wind speed.
天气是大气的日常状况，包括温度、降水量和风速。
Climate is the average weather pattern of an area over a long period, usually 30 years.
气候是一个地区长期的（通常 30 年）平均天气模式。
Precipitation is any form of water falling from the atmosphere, such as rain, snow, sleet, or hail.
降水是任何形式的水从大气中降落，如雨、雪、雨夹雪或冰雹。
Temperature measures how hot or cold the air is, usually in degrees Celsius (°C).
温度衡量空气的冷热程度，通常以摄氏度 (°C) 为单位。
Air pressure is the weight of the air pressing down on the Earth. High pressure usually brings settled weather, while low pressure brings clouds and rain.
气压是空气向下压迫地球的重量。高压通常带来稳定天气，低压带来云和雨。
Wind is moving air caused by differences in air pressure. Wind direction is reported by where it comes from.
风是由气压差异引起的空气运动。风向指的是风的来向。
5. Population & Settlement | 人口与聚落
Population density describes how many people live in a given area, usually per square kilometre (km²).
人口密度描述特定区域内的人口数量，通常以每平方公里 (km²) 人数表示。
An urban area is a built-up settlement like a town or city. A rural area is the countryside with low population density.
城市区域是像城镇或城市这样的建成区。乡村地区人口密度低，属于农村。
Migration is the movement of people from one place to another. It can be internal (within a country) or international.
迁移是人口从一个地方移动到另一个地方。可以是国内迁移或国际迁移。
A settlement hierarchy ranks settlements by size and the services they provide, from hamlets to conurbations.
聚落等级按规模和服务功能对聚落进行排序，从小村庄到大都市连绵区。
The function of a settlement refers to its main activities or purposes, such as residential, industrial, tourist, or port functions.
聚落的功能指其主要活动或用途，如居住、工业、旅游或港口功能。
6. Economic Activities | 经济活动
Primary industry extracts raw materials directly from nature, e.g. farming, fishing, mining.
第一产业直接从自然界提取原材料，如农业、渔业、矿业。
Secondary industry makes goods by processing raw materials, e.g. factories, construction.
第二产业通过加工原材料制造产品，如工厂、建筑业。
Tertiary industry provides services, such as retail, education, healthcare, and tourism.
第三产业提供服务，如零售、教育、医疗和旅游。
Quaternary industry involves research, information technology, and high-level decision making.
第四产业涉及研发、信息技术和高层次决策。
Renewable energy comes from resources that are naturally replenished, like solar, wind, and hydroelectric power.
可再生能源来自自然补充的资源，如太阳能、风能和水力发电。
Non-renewable energy is finite, including fossil fuels like coal, oil, and natural gas.
不可再生能源是有限的，包括煤、石油和天然气等化石燃料。
7. Tectonic Hazards | 构造危害
The Earth’s crust is divided into tectonic plates that move on the mantle. Plate boundaries are where plates meet and can be constructive, destructive, or conservative.
地壳被分成多个构造板块，在地幔上移动。板块边界是板块相遇处，可分为建设型、破坏型或保守型。
An earthquake is a sudden shaking of the ground caused by the release of stress along a fault or plate boundary.
地震是由断层或板块边界应力释放引起的地面突然震动。
A volcano is a vent in the Earth’s surface through which magma escapes. Magma is molten rock underground; when it reaches the surface it is called lava.
火山是岩浆逸出的地表开口。岩浆是地下的熔岩；到达地表后称为熔岩。
The epicentre is the point on the Earth’s surface directly above the focus of an earthquake.
震中是震源正上方的地表点。
A tsunami is a series of huge ocean waves caused by underwater earthquakes or volcanic eruptions.
海啸是由海底地震或火山喷发引发的一系列巨大海浪。
8. Ecosystems & Environment | 生态系统与环境
An ecosystem is a community of living organisms interacting with their non-living environment (air, water, soil).
生态系统是生物群落与其非生物环境（空气、水、土壤）相互作用的系统。
A biome is a large-scale ecosystem with a distinctive climate and dominant plant and animal species, e.g. tropical rainforest, tundra.
生物群落是具有独特气候和主要动植物种类的大型生态系统，如热带雨林和苔原。
Deforestation is the large-scale removal of trees, often to clear land for agriculture or development.
森林砍伐是为农业或开发而大规模清除树木的行为。
Sustainable development meets the needs of the present without compromising the ability of future generations to meet their own needs.
可持续发展既满足当代需求，又不对后代满足其需求的能力构成危害。
Biodiversity is the variety of life in
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