Year 7 Cambridge Physics: Full Syllabus Breakdown | Year 7 剑桥物理课程大纲全面解析

📚 Year 7 Cambridge Physics: Full Syllabus Breakdown | Year 7 剑桥物理课程大纲全面解析

Year 7 Cambridge Physics forms part of the Cambridge Lower Secondary Science curriculum, designed for learners aged 11–12. It introduces foundational concepts in forces, energy, waves, electricity, magnetism and astronomy. Students develop scientific enquiry skills through practical work and learn to apply physics to everyday situations. This guide provides a thorough breakdown of the syllabus, helping learners and parents understand exactly what is covered and how to succeed.

Year 7 剑桥物理是剑桥初中科学课程的核心组成部分，面向 11–12 岁的学生。课程系统地介绍了力、能量、波、电学、磁学以及天文学的基本概念。学生通过实验操作训练科学探究能力，并学会将物理知识运用于日常生活。本文全面解析课程大纲，帮助学生和家长清晰知晓学习内容与备考方法。

1. Curriculum Overview and Learning Objectives | 课程概览与学习目标

The Year 7 Physics syllabus is structured around six main content areas plus scientific enquiry. The aims are to cultivate curiosity about the physical world, build a solid grasp of key concepts, and develop skills in planning experiments, collecting data and drawing evidence-based conclusions. Assessment includes end-of-stage tests that check knowledge, understanding and application.

Year 7 物理课程围绕六大知识模块和科学探究能力展开。其目标是激发学生对物理世界的好奇心，建立对核心概念的扎实理解，并培养实验设计、数据收集和基于证据得出结论的能力。评估包括阶段性测试，考查知识掌握、理解深度以及实际应用水平。

Cambridge Lower Secondary Stage 7 Physics topics typically include Forces and Motion, Energy, Sound, Light, Electricity, Magnetism and The Earth in Space. Each topic is taught with an emphasis on real-world examples and practical investigation, ensuring that theory is always linked to observable phenomena.

剑桥初中第 7 阶段物理通常涵盖力和运动、能量、声、光、电、磁以及地球与太空等主题。每个主题的教学都强调与生活实例和实验探究相结合，确保理论与可观察现象紧密联系。

---

2. Forces and Motion | 力与运动

A force is a push or a pull that can change an object’s speed, direction or shape. Forces are measured in newtons (N) using a force meter or spring balance. Understanding forces helps us describe everything from a car braking to a ball being kicked.

力是一种能改变物体速度、方向或形状的推或拉。力以牛顿 (N) 为单位，使用测力计或弹簧秤进行测量。理解力有助于我们描述从汽车刹车到足球被踢出的各种现象。

When forces on an object are balanced, there is no change in motion. If forces are unbalanced, the object accelerates or decelerates. This explains why a stationary object starts moving when the applied force overcomes friction.

当作用在物体上的力相互平衡时，运动状态不变。如果力不平衡，物体就会加速或减速。这就解释了为何当施加的力克服摩擦力时，静止的物体会开始运动。

The weight of an object is the gravitational force acting on it. Weight can be calculated using the equation:

物体的重量是作用在其上的重力。重量可以通过以下公式计算：

weight = mass × gravitational field strength

W = m × g

On Earth, the gravitational field strength g is approximately 10 N/kg. This means a 1 kg mass weighs 10 N. Mass stays the same everywhere, but weight changes if gravity is different, for example on the Moon.

在地球上，重力场强度 g 约为 10 N/kg。这意味着 1 kg 的物体重量为 10 N。质量在任何地方保持不变，但如果重力不同，比如在月球上，重量就会改变。

Friction is a force that opposes motion between two surfaces in contact. Air resistance is a type of friction that acts on objects moving through air. Both can slow down moving objects and generate heat.

摩擦力是一种阻碍接触表面间运动的力。空气阻力是作用在空气中运动物体上的一种摩擦力。两者都能减慢物体运动并产生热量。

Speed tells us how fast an object is moving. The formula for average speed is:

速度表示物体运动的快慢。平均速度的公式为：

average speed = distance ÷ time

Common units are metres per second (m/s) or kilometres per hour (km/h).

常用单位是米每秒 (m/s) 或千米每小时 (km/h)。

---

3. Energy Transfers and Transformations | 能量转移与转化

Energy is the ability to do work and is measured in joules (J). Everything that happens involves energy being transferred or transformed from one form to another. The law of conservation of energy states that energy cannot be created or destroyed, only changed in form.

能量是做功的能力，以焦耳 (J) 为单位。任何过程都涉及能量的转移或从一种形式转化为另一种形式。能量守恒定律指出，能量既不能创造也不能消灭，只能改变形式。

Common forms of energy include kinetic energy (movement), gravitational potential energy (stored by height), elastic potential energy (stretched or compressed materials), thermal energy (heat), light energy, sound energy and electrical energy.

常见的能量形式包括动能（运动）、重力势能（由高度储存）、弹性势能（拉伸或压缩材料）、热能（热量）、光能、声能和电能。

Energy transfer diagrams are used to trace how energy moves in a system. For example, in a battery-powered lamp: chemical energy in the battery → electrical energy in the wires → light and thermal energy from the bulb.

能量转移图用于追踪系统中能量的移动路径。例如，在一个电池驱动的小灯中：电池中的化学能 → 导线中的电能 → 灯泡发出的光能和热能。

Useful energy is the part that does the job we want; wasted energy spreads into the surroundings, often as heat. Understanding this helps us design more efficient machines and reduce energy loss.

有用能量是完成所需工作的部分；浪费的能量则散失到环境中，通常以热能形式存在。理解了这一点有助于我们设计更高效的机器，减少能量损失。

A pendulum and a bouncing ball are classic demonstrations of energy transformations: kinetic energy converts to gravitational potential energy and back again. Over time, the height decreases as energy is transferred to the surroundings via air resistance and friction.

摆锤和弹跳球是能量转化的经典演示：动能转化为重力势能，再转化回来。随着时间的推移，高度减小，因为能量通过空气阻力和摩擦力转移到周围环境中。

---

4. Sound Waves | 声波

Sound is produced by vibrating objects and travels as a longitudinal wave. It requires a medium (solid, liquid or gas) to propagate; in a vacuum, sound cannot travel. The speed of sound in air is roughly 340 m/s, but it is faster in solids.

声音由物体振动产生，并以纵波形式传播。它需要介质（固体、液体或气体）才能传播；在真空中声音无法传播。声音在空气中的速度大约为 340 m/s，但在固体中更快。

The pitch of a sound depends on the frequency of vibration, measured in hertz (Hz). A high frequency gives a high pitch, while low frequency gives a low pitch. Amplitude determines the loudness: larger vibrations produce louder sounds.

音调取决于振动频率，单位为赫兹 (Hz)。频率高则音调高，频率低则音调低。振幅决定响度：振动幅度越大，声音越响。

Sound waves can be reflected, producing an echo. This happens when sound bounces off a hard surface. Echoes are used in sonar and by bats to locate objects.

声波可以被反射，产生回声。当声音遇到坚硬表面反弹时就形成回声。回声被应用于声呐和蝙蝠定位。

The human ear detects sound through a series of parts: the outer ear collects sound waves, the eardrum vibrates, tiny bones amplify the vibrations, and the cochlea converts them into electrical signals for the brain. Protecting hearing from loud noises is essential.

人耳通过一系列结构探测声音：外耳收集声波，鼓膜振动，听小骨放大振动，耳蜗将其转化为电信号传递给大脑。保护听力以免受强噪音伤害至关重要。

---

5. Light and Seeing | 光与视觉

Light is a form of energy that travels in straight lines at a speed of about 300,000 km/s in a vacuum. Shadows are formed when an opaque object blocks light, demonstrating rectilinear propagation.

光是一种能量形式，在真空中以约 300,000 km/s 的速度沿直线传播。当不透明的物体阻挡光线时形成影子，这证明了光的直线传播。

Reflection is the bouncing of light off a surface. The law of reflection states that the angle of incidence equals the angle of reflection, both measured from the normal. This principle allows us to see images in mirrors.

反射是光在物体表面的反弹。光的反射定律表明，入射角等于反射角，两者都从法线量起。这一原理使我们能在镜子中看到图像。

Plane mirrors produce virtual, upright images that are the same size as the object and appear behind the mirror. Understanding reflection is key to explaining how periscopes and other optical devices work.

平面镜产生正立、等大的虚像，并且像看起来在镜子后方。理解反射是解释潜望镜和其他光学设备工作原理的关键。

White light is a mixture of all colours of the visible spectrum. A prism can disperse white light into its component colours: red, orange, yellow, green, blue, indigo and violet. The colour of an object depends on which colours of light it reflects; a red apple reflects red light and absorbs others.

白光是由可见光谱中所有颜色混合而成的。棱镜可以将白光色散为其组成颜色：红、橙、黄、绿、蓝、靛、紫。物体的颜色取决于它反射哪些颜色的光；一个红色苹果反射红光，吸收其他颜色。

---

6. Electricity Basics | 电学基础

Electricity is the flow of electric charge, normally carried by electrons in a conductor. A simple circuit requires a source of electrical energy (like a cell), conducting wires and a load (such as a bulb) to convert the energy.

电是电荷的流动，通常由导体中的电子携带。一个简单电路需要电源（如电池）、导线和用电器（如灯泡）来转换能量。

Current is the rate of flow of charge and is measured in amperes (A). In a series circuit, the current is the same at all points. Voltage (potential difference) is measured in volts (V) and provides the ‘push’ driving the current around the circuit.

电流是电荷流动的速率，以安培 (A) 为单位。在串联电路中，各处的电流相同。电压（电势差）以伏特 (V) 为单位，提供驱动电流在电路中流动的“推力”。

Conductors, like copper and aluminium, allow charge to flow easily because they have free electrons. Insulators, such as rubber and plastic, do not permit easy flow and are used to coat wires for safety.

导体，如铜和铝，允许电荷轻易流动，因为它们内部有自由电子。绝缘体，如橡胶和塑料，不允许多电荷流动，常用来包裹电线以确保安全。

Circuit diagrams use standard symbols for components: a cell, a battery (two cells), a bulb, a switch, a buzzer and a motor. Drawing clear circuit diagrams helps in planning and troubleshooting electrical systems.

电路图使用标准符号表示元件：单个电池、电池组（两个电池）、灯泡、开关、蜂鸣器和电动机。绘制清晰的电路图有助于规划和检测电气系统。

Adding more cells in series increases the total voltage and can make bulbs shine brighter. However, if too many bulbs are added in series, they share the voltage and become dimmer because the current decreases.

串联增加电池会提高总电压，从而使灯泡更亮。然而，如果串联接入过多的灯泡，它们会分摊电压，导致灯泡变暗，因为电流减小了。

---

7. Magnetism and Electromagnetism | 磁与电磁

Magnets attract objects made of magnetic materials such as iron, nickel and cobalt. Every magnet has a north and a south pole. Like poles repel; opposite poles attract. The magnetic force is strongest at the poles.

磁铁能吸引由磁性材料如铁、镍、钴制成的物体。每块磁铁都有北极和南极。同名磁极相互排斥，异名磁极相互吸引。磁力在两极最强。

A magnetic field is the region around a magnet where magnetic effects can be detected. Field lines show the direction of the field (from north to south) and the concentration of lines indicates field strength.

磁场是磁铁周围可以检测到磁效应的区域。磁感线显示磁场方向（从北极指向南极），而磁感线的疏密表示磁场强弱。

The Earth itself acts like a giant magnet, with its magnetic south pole near the geographic North Pole. This is why a compass needle, which is a small magnet, aligns along the north-south direction.

地球本身就像一块巨大的磁铁，它的磁南极位于地理北极附近。这就是指南针（一个小磁针）会沿南北方向排列的原因。

An electromagnet is made by wrapping a coil of wire around a soft iron core and passing an electric current through it. Electromagnets can be turned on and off, and their strength can be increased by adding more turns to the coil or increasing the current.

电磁铁是将线圈缠绕在软铁芯上，并通过电流制成。电磁铁可以开启和关闭，并且可以通过增加线圈匝数或增大电流来增强其磁性。

Common uses of electromagnets include electric bells, scrap-metal lifting cranes and relay switches. The ability to control magnetism electrically makes electromagnets incredibly versatile in technology.

电磁铁的常见用途包括电铃、废金属起重机和继电器。电磁铁的可控磁性使其在技术领域具有非常灵活的应用。

---

8. The Earth and Beyond | 地球与宇宙空间

The Earth rotates on its axis once every 24 hours, causing day and night. It also orbits the Sun once per year (approximately 365¼ days). The tilt of Earth’s axis, at about 23.5°, gives rise to the seasons as different parts receive varying solar intensity during the year.

地球每 24 小时绕地轴自转一圈，形成昼夜。地球同时绕太阳公转，周期为一年（约 365¼ 天）。地轴倾斜约 23.5°，使得一年中不同地区接收到太阳辐射的强度不同，从而产生四季变化。

The Moon orbits the Earth roughly every 28 days. The changing appearance of the Moon, or phases, is due to the changing positions of the Moon, Earth and Sun. Key phases include new moon, first quarter, full moon and last quarter.

月球大约每 28 天绕地球一周。月相的盈亏变化是由月球、地球和太阳之间的相对位置变化引起的。主要月相包括新月、上弦月、满月和下弦月。

The Solar System consists of the Sun, eight planets and their moons, dwarf planets and many smaller bodies. The order of planets from the Sun is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. My Very Educated Mother Just Served Us Noodles is a common mnemonic to remember the sequence.

太阳系由太阳、八大行星及其卫星、矮行星和许多小天体组成。由近到远的行星顺序是：水星、金星、地球、火星、木星、土星、天王星、海王星。常用“水金地火木土天海”来帮助记忆。

Gravity is the force that keeps planets in orbit around the Sun and moons around planets. The Sun’s immense gravity holds the entire Solar System together. Understanding these motions helps astronomers predict eclipses and spacecraft trajectories.

引力是使行星绕太阳运转、卫星绕行星运转的力。太阳巨大的引力维系着整个太阳系的稳定。理解这些运动规律有助于天文学家预测日食、月食以及航天器的飞行轨道。

---

9. Scientific Enquiry and Practical Skills | 科学探究与实验技能

Practical work is central to Year 7 Physics. Students learn to identify independent variables (what you change), dependent variables (what you measure) and control variables (what you keep the same). This structure helps design fair tests.

实验操作是 Year 7 物理的核心。学生学会识别独立变量（你改变的）、因变量（你测量的）和控制变量（保持不变的因素）。这一结构有助于设计公平实验。

Safe use of laboratory equipment is a priority. This includes handling glassware correctly, using electrical components safely and tying back long hair when using open flames. Risk assessments are often discussed before each investigation.

安全使用实验室器材是首要原则，包括正确操作玻璃仪器、安全使用电气元件，以及在用明火时束起长发。每次实验探究前通常要讨论风险评估。

Recording results in clear tables with appropriate headings and units is essential. Data should be plotted on line graphs or bar charts, with axes labelled and scales chosen sensibly. Drawing a line of best fit helps reveal trends.

清晰记录结果于表格中，并标好合适的表头和单位至关重要。数据应绘制为折线图或条形图，坐标轴标注清楚并选择合适的刻度。作出一条最佳拟合线有助于揭示变化趋势。

Conclusions should refer back to the original prediction and be supported by numerical evidence. Explaining whether results are reliable, identifying anomalies and suggesting improvements are key skills that separate good scientists from great ones.

结论必须回应最初的预测，并以数据作为证据支撑。解释结果是否可靠、识别异常数据并提出改进建议，是区分优秀科学家和卓越科学家的关键技能。

---

10. Tips for Success in Year 7 Physics | Year 7 物理学习成功秘诀

Start by mastering the key vocabulary for each topic. Make flashcards with terms like “newton,” “frequency,” “amplitude,” “voltage” and “gravitational field strength.” Knowing the language of physics makes it much easier to understand questions and construct answers.

从掌握每个专题的关键术语入手。制作抽认卡片，记下“牛顿”“频率”“振幅”“电压”“重力场强度”等词汇。熟悉物理学的语言能极大帮助你理解问题并构建答案。

Always practise applying equations, not just memorising them. For example, work through plenty of calculations using speed = distance ÷ time and weight = mass × g. Rearranging equations is another skill worth developing early.

务必练习运用公式，而不仅仅是记忆它。例如，用 速度 = 距离 ÷ 时间 和 重量 = 质量 × g 做大量计算练习。另一个值得尽早培养的技能是公式变形。

Draw labelled diagrams for circuits, magnetic fields, light rays and energy transfers. Visual representations often clarify ideas that words alone cannot. In exams, well-drawn

Published by TutorHao | Year 7 Physics Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）