📚 Year 7 WJEC Science: Complete Syllabus Breakdown | Year 7 WJEC 科学：课程大纲全面解析
The Year 7 WJEC Science curriculum introduces learners to the foundational concepts of biology, chemistry and physics, while embedding essential scientific skills from the very start. This syllabus is designed to spark curiosity about the natural world, build a strong understanding of how science works, and prepare students for the demands of GCSE study later on. In this article, we break down every major topic area and the skills learners will develop, giving parents and students a clear roadmap to success.
Year 7 WJEC 科学课程将带领学生初探生物学、化学与物理学的基础概念，并从一开始就融入核心的科学探究技能。该大纲旨在激发对自然界的好奇心，建立对科学运作方式的扎实理解，并为日后GCSE学习做好准备。本文全面解析每一个主要学习领域以及学生将培养的技能，为家长和学生提供清晰的进步路线图。
1. Working Scientifically | 科学方法实践
From the very first lesson, Year 7 students are taught how to think and work like scientists. This overarching theme runs through all other topics and includes planning investigations, identifying variables, recording data, and drawing conclusions. Learners become familiar with laboratory equipment such as Bunsen burners, thermometers, and measuring cylinders, and they are trained to assess risks and work safely.
从第一节课开始，七年级学生就被教导像科学家一样思考与工作。这一贯穿始终的主题涉及设计探究实验、识别变量、记录数据和得出结论。学生们会熟悉本生灯、温度计、量筒等实验设备，并学习风险评估与安全操作。
Key scientific skills are developed through practical activities: making observations, classifying objects, measuring accurately, and interpreting patterns in data. A simple formula used here is the calculation of a mean: (sum of readings) ÷ (number of readings). Students are also introduced to drawing graphs and spotting anomalies.
通过实践活动培养关键科学技能：进行观察、分类、精确测量以及解读数据中的规律。此处会用到一个简单公式——平均值 = 读数总和 ÷ 读数个数。学生还会初步学习绘制图表与识别异常值。
The emphasis on 'Working Scientifically' ensures that by the end of Year 7, learners can design a fair test, use correct scientific vocabulary, and evaluate the reliability of their results.
“科学方法实践”的重视，能确保在七年级结束时，学生能够设计公正实验，运用正确的科学词汇，并评估结果的可靠性。
2. Cells and Organisation | 细胞与组织结构
us, cytoplasm, cell membrane, mitochondria, and in plants, the cell wall, chloroplasts, and a large permanent vacuole. They learn to use a light microscope to observe onion epidermis and cheek cells, preparing slides and calculating total magnification (eyepiece magnification × objective magnification).
本生物单元介绍细胞是生命的基本单位。学生比较植物与动物细胞，识别关键细胞器：细胞核、细胞质、细胞膜、线粒体，以及植物特有的细胞壁、叶绿体和中央大液泡。他们学习使用光学显微镜观察洋葱表皮和口腔上皮细胞，制作玻片并计算总放大倍数（目镜倍数 × 物镜倍数）。
Building on this, learners explore how cells organise into tissues, organs, and organ systems. They study the structure and function of the human skeleton and muscular system, linking the idea of cells working together to produce movement. The concept of diffusion is introduced as the movement of particles from a high concentration to a low concentration, important in gas exchange in lungs.
在此基础上，学生探究细胞如何组织成组织、器官和器官系统。他们学习人体骨骼与肌肉系统的结构与功能，将细胞协同工作的概念与运动联系起来。扩散的概念被引入，即粒子从高浓度区域向低浓度区域移动，在肺部气体交换中至关重要。
A common practical involves investigating how surface area affects diffusion using agar jelly cubes and indicator. This reinforces measurement skills and the use of control variables.
一项常见活动是用琼脂方块和指示剂探究表面积如何影响扩散，这强化了测量技能和控制变量的运用。
3. Particles and States of Matter | 粒子与物质状态
Students investigate the particle model to explain the properties of solids, liquids, and gases. They learn that all matter is made of tiny particles in constant motion, and that the arrangement and energy of these particles determine the state. Solids have fixed, closely packed particles with low energy, liquids have particles that can slide past each other, and gases have widely spaced, fast-moving particles.
学生探究粒子模型，以解释固体、液体和气体的性质。他们了解所有物质由不断运动的微小粒子构成，粒子的排列方式和能量决定了物质状态。固体粒子紧密、固定，能量低；液体粒子能彼此滑动；气体粒子间距大且快速移动。
The concept of changes of state—melting, freezing, boiling, condensation, sublimation—is linked to energy transfers rather than a change in the particles themselves. A heating curve experiment, where students record temperature change while heating ice to water vapour, helps visualise the plateau during melting and boiling because energy is used to overcome forces between particles.
状态变化——熔化、凝固、沸腾、冷凝、升华——与能量转移相关，而非粒子本身发生变化。一个升温曲线实验，学生加热冰直到变为水蒸气并记录温度变化，有助于直观看到熔化和沸腾时的温度平台，因为此时能量被用来克服粒子间作用力。
le formulae such as density = mass ÷ volume are introduced using kg and m³ units, though only conceptually.
学生也开始应用粒子模型解释密度、气体压强，以及材料随温度热胀冷缩的原因。密度 = 质量 ÷ 体积等简单公式以千克和立方米为单位引入，但仅限于概念层面。
4. Forces and Motion | 力与运动
The forces topic starts with identifying different types of forces: gravity, friction, air resistance, tension, and magnetic force. Students represent forces using arrows in free-body diagrams and understand that forces are measured in newtons (N) using a force meter. A balanced force situation leads to constant speed or an object at rest, while unbalanced forces cause a change in speed or direction.
力与运动这一主题从识别不同类型的力开始：重力、摩擦力、空气阻力、张力和磁力。学生用箭头在隔离体图中表示力，并理解力用牛顿（N）为单位，通过测力计测量。平衡力导致匀速运动或静止，非平衡力则引起速度或方向的改变。
arry out practicals such as timing a toy car down a ramp to calculate average speed, plotting distance– gradient of a line as representing speed, with steeper gradients indicating faster motion.
速度、距离和时间的关系是核心计算关联：速度 = 距离 ÷ 时间。学生进行诸如测量玩具车沿斜坡下滑的时间来计算平均速度等实验，并绘制距离—时间图。他们解读线的斜率代表速度，斜率越陡表示运动越快。
Magnetic forces extend the topic: permanent magnets, magnetic poles, and the behaviour of iron, cobalt, and nickel are investigated. Students plot magnetic fields using iron filings and compasses, and learn that the Earth behaves as a giant magnet.
磁力拓展了这个主题：研究永磁体、磁极以及铁、钴、镍的行为。学生用铁屑和指南针描绘磁场，并理解地球相当于一个巨大的磁体。
5. Energy Resources and Transfers | 能源与能量转移
Year 7 Science introduces energy as something needed to make things happen, measured in joules (J). The law of conservation of energy is taught: energy cannot be created or destroyed, only transferred from one store to another. Students learn to identify energy stores: kinetic, thermal, chemical, gravitational potential, elastic potential, and nuclear.
七年级科学引入能量作为使事物发生改变所需的概念，以焦耳（J）为单位。教授能量守恒定律：能量不能凭空产生或消失，只能从一种储能转移到另一种。学生学习识别储能库：动能、热能、化学能、重力势能、弹性势能和核能。
Energy transfers are modelled using pathways: by heating, by waves (light and sound), by electrical current, and by mechanical work. Simple Sankey diagrams are drawn to visualise useful and wasted energy in a system, highlighting the idea of efficiency without formal calculations at this stage.
能量转移通过以下途径建模：通过加热、通过波（光与声）、通过电流以及通过机械做功。绘制简单的桑基图以直观显示系统中的有用能量和废弃能量，突显效率的概念，但此阶段不进行正式计算。
Learners explore fossil fuels and renewable resources like solar, wind, and hydroelectric power. They discuss the advantages and disadvantages of each, and consider the idea of sustainability. This links back to heating practicals: measuring the temperature change of water heated by a small candle can introduce the concept of energy in fuels.
学生探究化石燃料和太阳能、风能、水能等可再生能源。讨论每种能源的优缺点，并思考可持续性理念。这可以结合加热实验：测量用一支小蜡烛加热水的温度变化，引入燃料能量的概念。
6. Reproduction and Inheritance | 繁殖与遗传
This unit begins with the human reproductive systems, naming the main organs and describing their functions. The process of fertilisation—fusion of sperm and egg cell—is connected back to cell biology. Puberty and the hormonal changes that cause physical and emotional development are explained in an age-appropriate way, linking to personal health and wellbeing.
本单元从人类生殖系统开始，指认主要器官并描述其功能。受精过程——精子和卵细胞的融合——被与细胞生物学联系起来。以适合该年龄的方式解释青春期以及引起身体与情感变化的激素，联系个人健康与福祉。
The menstrual cycle is introduced in a basic form, highlighting ovulation and menstruation. Students learn that the embryo implants into the uterus wall and the placenta provides oxygen and nutrients. The topic also covers how harmful substances like alcohol and drugs can pass across the placenta and affect fetal development.
月经周期以基础形式引入，突出排卵和行经。学生了解胚胎着床于子宫壁，胎盘提供氧气与营养物质。该主题同样涵盖酒精、药物等有害物质如何穿过胎盘并影响胎儿发育。
A brief look at plant reproduction includes flower anatomy: petals, stamen, carpel, and the processes of pollination and fertilisation. Seed dispersal mechanisms are linked to adaptation. Finally, the concept of inherited versus environmental variation sets the stage for later genetics, with students exploring continuous and discontinuous variation by measuring height or tongue rolling.
植物繁殖概览包括花的结构：花瓣、雄蕊、心皮以及传粉和受精过程。种子传播机制与适应性相联系。最后，遗传变异与环境变异的概念为日后的遗传学打下基础，学生通过测量身高或卷舌来探究连续变异与非连续变异。
7. Chemical Reactions | 化学反应
Students move from physical changes to chemical changes, learning that in a chemical reaction, new substances are formed and the process is usually irreversible. They observe evidence of reactions: colour change, temperature change, formation of a gas (effervescence), or a precipitate forming from two clear solutions.
学生从物理变化过渡到化学变化，认识到在化学反应中会生成新物质，且过程通常不可逆。他们观察反应的证据：颜色变化、温度变化、气体生成（气泡）或两种透明溶液产生沉淀。
are introduced, for example: hydrochloric acid + magnesium → magnesium chloride + hydrogen. Balancing symbol equations is not expected until Year 8 or 9, but the arrow notation is used.
粒子模型被扩展用以解释反应是原子的重新排列，并与质量守恒建立联系。引入简单的文字方程式，例如：盐酸 + 镁 → 氯化镁 + 氢气。配平符号方程式通常要到八年级或九年级才要求，但使用箭头符号。
Common reactions investigated include combustion of magnesium ribbon (bright white light), thermal decomposition of calcium carbonate (producing quicklime and carbon dioxide), and the reaction of acids with metals or carbonates. Testing gases: the squeaky pop test for hydrogen, limewater turned cloudy for carbon dioxide, and the glowing splint relight for oxygen, are essential practical skills.
探究的常见反应包括：镁条燃烧（发出耀眼白光）、碳酸钙的热分解（生成生石灰和二氧化碳）、酸与金属或碳酸盐的反应。气体检验是重要的实验技能：用“爆鸣声”检验氢气、用石灰水变浑浊检验二氧化碳、用带火星的木条复燃检验氧气。
8. Ecosystems and Interdependence | 生态系统与相互依存
Year 7 learners explore the web of life, starting with food chains and food webs. They construct prey–predator relationships and understand the terms producer, primary consumer, secondary consumer, and decomposer. Energy flows through the ecosystem, and toxic materials can accumulate via bioaccumulation, as seen in DDT and birds of prey.
七年级学生从食物链和食物网开始探索生命之网。他们构建捕食者—猎物关系，并理解生产者、初级消费者、次级消费者和分解者等术语。能量流经生态系统，而毒性物质可通过生物累积作用富集，例如DDT和猛禽案例。
Habitat study is often carried out in the school grounds: using quadrats to estimate population size and transect lines to observe distribution across an environmental gradient. Students learn to sample randomly and record data systematically, calculating means and discussing sampling validity.
栖息地研究通常在校园中进行：使用样方估算种群数量，用样线观察环境梯度上的分布。学生学习随机取样和系统记录数据，计算平均值并讨论取样的有效性。
Adaptations of plants and animals to daily and seasonal changes are covered: storage organs, thorns, waxy leaves, or nocturnal behaviour. Competition for resources such as light, water, space, and mates is discussed, along with the impact of non-native species on native ecosystems.
涵盖动植物对昼夜与季节变化的适应性：储藏器官、刺、蜡质叶片或夜行行为。讨论对光、水、空间和配偶等资源的竞争，以及外来物种对本土生态系统的影响。
9. Waves: Light and Sound | 波：光与声
mages in pinhole cameras. The law of reflection (angle of incidence = angle of reflection) is investigated using plane mirrors and ray boxes, with angles measured in degrees.
波的物理学从光开始。学生将光模拟为沿直线传播，解释影子、日食月食以及针孔相机成像。使用平面镜和光线盒探究反射定律（入射角 = 反射角），以度为单位测量角度。
Refraction is introduced as the change in direction of light when it passes from one transparent medium to another, such as from air to glass. Students draw ray diagrams and observe the apparent bending of a pencil in a glass of water. The visible spectrum is split by a prism into seven colours, linking to the rainbow.
折射被引入为光从一种透明介质进入另一种（如从空气进入玻璃）时方向的改变。学生绘制光路图，并观察铅笔在水中似乎弯折的现象。棱镜将可见光分成七色，与彩虹相联系。
Sound waves are compared to light waves: sound requires a medium to travel through and is caused by vibrations. The relationship between loudness and amplitude, and pitch and frequency is demonstrated using musical instruments and oscilloscope displays. The speed of sound in air (approximately 330 m/s) is compared to the much faster speed of light, explaining why lightning is seen before thunder is heard.
声波与光波相比较：声音需要介质传播，由振动引起。用乐器和示波器演示响度与振幅、音调与频率的关系。声音在空气中的速度（约330 m/s）与快得多的光速对比，解释了为什么先看到闪电后听到雷声。
Humans' hearing range is discussed alongside the ear's structure, and the need to protect hearing from loud sounds is linked to health education.
人类的听觉范围与耳朵构造一起讨论，保护听力免受高声伤害的必要性与健康教育相联系。
10. Electricity and Magnetism | 电与磁
An introduction to electricity covers static and current electricity. Simple static experiments with balloons and cloth demonstrate the transfer of electrons, leaving materials with opposite charges that attract. Current is defined as a flow of electric charge, measured in amperes (A). Students learn circuit symbols and build series circuits with cells, lamps, buzzers, and motors.
电学入门涵盖静电和电流。用气球和布做简单的静电实验，展示电子转移，使材料带上异性电荷而相互吸引。电流定义为电荷的流动，以安培（A）计量。学生学习电路符号，搭建包含电池、灯泡、蜂鸣器和电机的串联电路。
Conductors and insulators are investigated through practical circuit testing: metals and graphite conduct (the latter due to free electrons), while plastics, glass, and wood are insulators. The relationship between current and brightness of a bulb in a simple circuit is explored, with the metaphor of a pump pushing water around pipes used to explain voltage conceptually.
通过实际电路检测探究导体与绝缘体：金属和石墨导电（后者因有自由电子），而塑料、玻璃和木头是绝缘体。探索简单电路中电流与灯泡亮度的关系，用泵推动水在管道中流动的比喻来概念性地解释电压。
Magnetism is integrated: students construct an electromagnet by wrapping an insulated wire around an iron nail and connecting it to a cell. They find that increasing the number of coils or the current increases the magnet's strength, which can be tested by counting how many paper clips are attracted. This links directly back to the forces topic and provides a foundation for motors and dynamos in later years.
磁性被整合进来：学生通过在铁钉上缠绕绝缘导线并连接到电池上制作电磁铁。他们发现增加线圈匝数或电流能增加磁力强度，这可以通过吸引的回形针数量来检测。这直接联系到力与运动主题，并为日后学习电动机与发电机奠定基础。
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