📚 Year 7 AQA Physics: Winter Holiday Intensive Revision Plan | Year 7 AQA 物理：寒假强化复习计划
The winter break is a golden opportunity to reinforce your Year 7 physics knowledge without the pressure of daily school work. A structured revision plan can help you identify weak areas, practice key concepts, and return to school feeling confident. This guide provides a three-week intensive plan covering all major AQA KS3 physics topics for Year 7, including energy, forces, electricity, waves, and matter. Follow the daily tasks, tackle practice questions, and use the self-assessment checklist to track your progress.
寒假是巩固 Year 7 物理知识的黄金机会，没有日常学业的压力。一个结构化的复习计划可以帮助你发现薄弱环节，练习关键概念，并带着自信回到学校。本指南提供一个为期三周的强化计划，覆盖 Year 7 AQA KS3 物理的所有主要课题，包括能量、力、电学、波和物质。按照每日任务执行，处理练习题，并使用自我评估清单跟踪你的进展。
1. Setting Your Revision Goals | 设定你的复习目标
Before diving into topics, decide what you want to achieve. Go through your class tests and homework to list the areas where you lost marks. Write down specific goals, such as 'I will be able to calculate speed and draw distance-time graphs' or 'I can explain why current is the same everywhere in a series circuit'. Setting measurable targets makes your revision more effective.
在深入课题之前，先确定你想要达到的目标。翻阅课堂测验和作业，列出你丢分的地方。写下具体的目标，例如“我能够计算速度并画出距离-时间图”或者“我能解释为什么串联电路中电流处处相等”。设定可衡量的目标会让你的复习更有效。
Also, aim to spend about one hour per day on physics during the holidays. Break your session into 25-minute focused blocks followed by a 5-minute break. This technique keeps your brain fresh and improves memory.
同时，假期中每天尽量安排约一小时用于物理。将每次学习分成 25 分钟专注时段，随后休息 5 分钟。这个方法能让你的大脑保持清醒，并提升记忆。
2. Week 1 Focus: Energy Stores and Transfers | 第一周重点：能量储存与转移
Year 7 physics introduces the idea that energy is never created or destroyed, only transferred from one store to another. The main energy stores are kinetic, thermal, chemical, gravitational potential, elastic potential, and electrostatic. You need to describe how energy is transferred by forces doing work, by heating, and by radiation.
Year 7 物理引入了能量不会凭空产生或消灭，只会在不同储存库之间转移的概念。主要的能量储存包括动能、热能、化学能、重力势能、弹性势能和静电势能。你需要描述能量如何通过力做功、加热和辐射等方式进行转移。
stic potential store in the spring, and finally to kinetic energy of the moving toy. Be ready to draw energy transfer diagrams using arrows: Chemical store → Kinetic store → Elastic store → Kinetic store.
常见的试题会给出一个简单装置，比如发条玩具。你从食物中获得的化学能转移到你的肌肉，再转移到发条中的弹性势能储存，最后变成玩具运动的动能。准备好用箭头画出能量转移图：化学储存 → 动能储存 → 弹性储存 → 动能储存。
ass in kg, and v is speed in m/s). Although you will not do heavy maths, you must understand that doubling the speed quadruples the kinetic energy.
练习用 Eₖ = ½ m v² 计算动能（½ 是二分之一，m 是质量千克，v 是速度米/秒）。虽然不需要做大量计算，但你必须理解速度增加一倍，动能会变成原来的四倍。
3. Week 1 Focus: Forces and Their Effects | 第一周重点：力及其效应
Forces can change the speed, direction, or shape of an object. A stationary object stays still and a moving object continues at constant velocity unless a resultant force acts on it. This is Newton's First Law. The unit of force is the newton (N). Common forces include weight (gravity), friction, air resistance, upthrust, and tension.
力可以改变物体的速度、方向或形状。除非有合力作用，静止的物体保持静止，运动的物体保持匀速直线运动。这就是牛顿第一定律。力的单位是牛顿 (N)。常见的力包括重力、摩擦力、空气阻力、浮力和拉力。
To find resultant force, subtract forces acting in opposite directions along the same line. If a car has a driving force of 500 N forward and friction of 300 N backward, the resultant force is 200 N forward, causing the car to accelerate. When forces are balanced, the object moves at constant speed or stays at rest.
计算合力时，沿着同一直线相减方向相反的力。如果一辆汽车有向前的驱动力 500 N 和向后的摩擦力 300 N，则合力为向前 200 N，使汽车加速。当力平衡时，物体保持匀速运动或静止。
vert minutes to seconds and km to metres before calculating. Plot distance-time graphs: a straight line means constant speed; a horizontal line means the object is stationary; a steeper line means a faster speed. Revise how to calculate gradient to find speed.
速度公式是核心：速度 = 距离 ÷ 时间 (v = d / t)。计算前必须将分钟化成秒、公里化成米。绘制距离-时间图：直线表示匀速运动；水平线表示物体静止；更陡的线表示更快的速度。复习如何通过计算斜率来求速度。
4. Week 2 Focus: Introduction to Electricity | 第二周重点：电学入门
Q / t, where Q is charge in coulombs (C) and t is time in seconds (s). Potential difference (V), measured in volts (V), is the energy transferred per unit charge. Resistance (R) in ohms (Ω) opposes the current: V = I × R.
电是电荷的流动，由导线中的电子承载。电流 (I) 的单位是安培 (A)，它是电荷流动的速率：I = Q / t，其中 Q 是电荷量（库仑 C），t 是时间（秒 s）。电势差 (V) 的单位是伏特 (V)，它是每单位电荷转移的能量。电阻 (R) 的单位是欧姆 (Ω)，它阻碍电流：V = I × R。
Draw and recognise standard circuit symbols: cell, battery, lamp, switch, resistor, variable resistor, ammeter, voltmeter, and fuse. In series circuits, current is the same at every point, but the supply potential difference is shared between components. In parallel circuits, the potential difference across each branch is the same as the supply, but the total current splits between branches.
画出并识别标准电路符号：电池、电灯、开关、电阻器、变阻器、电流表、电压表和保险丝。在串联电路中，各处电流相等，但电源电压在元件间分配。在并联电路中，各支路两端的电压与电源相同，但总电流在各支路间分流。
A common misconception is that current gets 'used up'. Always remember that current is the flow of charge, and what is transferred is energy, not current. Practise explaining that the lamp lights because the chemical energy in the cell is transferred electrically to the lamp, where it is converted into light and heat.
一个常见的误解是电流会被“用光”。要永远记住电流是电荷的流动，被转移的是能量而不是电流。练习解释：灯泡发光是因为电池里的化学能通过电流转移到灯泡，在那里转化为光和热。
5. Week 2 Focus: Sound and Light Waves | 第二周重点：声波与光波
Waves transfer energy without transferring matter. Sound waves are longitudinal vibrations that travel fastest through solids, slower through liquids, and slowest through gases. They cannot travel through a vacuum. The frequency of a sound wave, measured in hertz (Hz), determines pitch; amplitude determines loudness.
波传递能量而不传递物质。声波是纵波，在固体中传播最快，液体中次之，气体中最慢。它无法在真空中传播。声波的频率（单位赫兹 Hz）决定音调高低；振幅决定响度。
The wave equation v = f × λ 0 m/s, typical in air. You may be asked to rearrange or use this equation with given data.
波速公式 v = f × λ 将波速 (v 单位 m/s)、频率 (f 单位 Hz) 和波长 (λ 单位米) 联系起来。对于频率 440 Hz、波长 0.75 m 的声波，波速为 330 m/s，这是空气中声波的典型速度。你可能需要根据数据变形或使用这个公式。
Light waves are transverse electromagnetic waves that can travel through a vacuum. You need to know the law of reflection: angle of incidence equals angle of reflection. Draw ray diagrams with a ruler, labeling the normal (the line perpendicular to the mirror). Revise how light refracts when passing from air into glass or water, bending towards the normal because it slows down.
光波是横波，是电磁波，可以在真空中传播。你需要掌握反射定律：入射角等于反射角。用尺子画光路图，标出法线（垂直镜面的线）。复习光从空气射入玻璃或水中时如何折射，因为速度变慢而向法线偏折。
6. Week 3 Focus: The Particle Model of Matter | 第三周重点：物质的粒子模型
All matter is made of tiny particles. The particle model explains the properties of solids, liquids, and gases. In solids, particles are closely packed in a regular arrangement and vibrate in fixed positions. In liquids, particles are close but can move past each other. In gases, particles are far apart and move randomly at high speed.
所有物质都由微小粒子组成。粒子模型解释了固体、液体和气体的性质。在固体中，粒子紧密排列成规则结构，在固定位置振动。在液体中，粒子紧密但可以相互滑动。在气体中，粒子相距很远，高速随机运动。
energy goes into breaking bonds between particles, so the temperature stays constant. The density equation ρ = m / V (density = mass ÷ volume) helps you compare how tightly packed particles are. The unit of density is kg/m³ or g/cm³.
物态变化（熔化、凝固、沸腾、冷凝、升华）涉及能量转移而温度不变。熔化过程中，能量用于打破粒子间的键，因此温度保持不变。密度公式 ρ = m / V（密度 = 质量 ÷ 体积）帮助你比较粒子堆积的紧密程度。密度的单位是 kg/m³ 或 g/cm³。
Diffusion is evidence for the particle model. You can observe potassium permanganate crystals spreading in water or a perfume smell filling a room. Diffusion happens faster at higher temperatures because particles move faster. Be ready to explain these observations in terms of particle movement.
扩散现象是粒子模型的证据。你可以观察到高锰酸钾晶体在水中扩散，或者香水味充满房间。温度越高，扩散越快，因为粒子运动更快。准备好用粒子的运动来解释这些观察结果。
7. Week 3 Focus: Practical and Investigative Skills | 第三周重点：实验与探究技能
In AQA KS3 science, a large part of your grade comes from practical skills. You must be able to identify independent variables (the one you change), dependent variables (the one you measure), and control variables (the ones you keep the same). A good investigation also includes a clear method, repeated readings, and a fair test.
在 AQA KS3 科学中，大部分成绩来自实验技能。你必须能够识别自变量（你改变的变量）、因变量（你测量的变量）和控制变量（保持不变的变量）。一个好的探究还包括清晰的方法、重复测量和公平测试。
When presenting data, use tables with column headings that include units, e.g. Time (s) and Temperature (°C). Plot line graphs with labelled axes, sensible scales, and data points marked with small crosses. Draw a smooth curve or a straight line of best fit; never just 'join the dots'. Comment on patterns: as X increases, Y increases/decreases.
呈现数据时，列表的表头要附上单位，如时间 (s) 和温度 (°C)。画折线图时坐标轴要标注、选择合适刻度、用叉号标记数据点。画出平滑曲线或最适直线；不要只是“连接点”。对规律进行说明：随着 X 增加，Y 增加/减少。
Evaluate your experiment by discussing anomalies and sources of error. For example, heat loss to the surroundings could make your temperature readings lower than expected. Suggest improvements like using a lid or insulating material. This shows a deeper understanding.
通过讨论异常值和误差来源对实验进行评价。例如，热量散失到周围环境会使你的温度读数低于预期。提出改进建议，如使用盖子或隔热材料。这体现了更深的理解。
8. Tackling Common Question Types | 应对常见考题类型
Exam questions often fall into several categories. Knowing what each command word means will save time. 'State' means give a short answer without explanation. 'Describe' means say what happens in detail. 'Explain' means give a reason using scientific ideas. 'Calculate' means use numbers from the question and show your working.
考题通常分为几类。了解每个指令词的含义会节省时间。“State”是给出简短答案，不解释。“Describe”是详细描述发生的事情。“Explain”是用科学观点给出理由。“Calculate”是使用题目给出的数字，展示计算过程。
For example, a question might ask: 'Explain why a cake baked in a shiny metal tin stays cooler longer than one in a black tin.' Your answer: 'The shiny surface reflects infrared radiation away, so less heat is absorbed, while the black surface absorbs more radiation, heating the cake faster. Therefore, the cake in the shiny tin stays cooler for longer.' These chains of cause and effect are crucial.
例如，题目可能问：“解释为什么用闪亮的金属模具烤蛋糕比用黑色模具烤的蛋糕保持冷却的时间更长。”你的答案：“闪亮表面将红外辐射反射出去，因此吸收的热量较少，而黑色表面吸收更多辐射，更快加热蛋糕。因此，闪亮模具中的蛋糕保持冷却更久。”这种因果链条至关重要。
Create a table of common answer structures for the topics:
| Command word / 指令词 | How to answer / 如何作答 |
|---|---|
| State | Give a fact, e.g. 'The unit of force is the newton (N).' / 给出事实，例如 '力的单位是牛顿 (N)。' |
| Describe | Say what you see or what happens step by step. / 分步骤说出你看到或发生的事。 |
| Explain | Use 'because' and link to scientific principles. / 使用“因为”并联系科学原理。 |
| Calculate | Write formula, substitute numbers, give unit. / 写出公式，代入数字，给出单位。 |
Practise past paper questions from your teacher or online resources. Mark your own work using the markscheme to understand where you lose marks. Often marks are for correct units or the 'and' in an explanation.
从老师或在线资源中练习历年试题。使用评分方案自我批改，明白失分点。通常分数是给正确的单位或解释中的“和”点。
9. Daily Study Schedule and Resources | 每日学习时间表与资源
Here is a suggested schedule for the three weeks. Adapt it to fit your family's holiday plans.
以下是为期三周的建议计划表。根据家庭假期安排进行调整。
| Day / 日 | Topic / 课题 | Task / 任务 |
|---|---|---|
| Week 1 Monday | Energy stores | Make flashcards, do 10 energy transfer diagrams. / 制作闪卡，完成10幅能量转移图。 |
| Week 1 Tuesday | Energy calculations | Practise Eₖ = ½ m v² and efficiency problems. / 练习 Eₖ = ½ m v² 和效率题。 |
| Week 1 Wednesday | Forces & resultant force | Draw force diagrams, calculate net force. / 画力的示意图，计算合力。 |
| Week 1 Thursday | Speed & motion graphs | Plot and interpret distance-time graphs. / 绘制并解读距离-时间图。 |
| Week 1 Friday | Review Day | Self-test on Week 1 topics; note weak points. / 自测第一周内容；记下薄弱点。 |
| Week 2 Monday | Electric current & circuits | Build simple circuits online (PhET), draw series/parallel. / 在线搭建电路（PhET），画串联/并联图。 |
| Week 2 Tuesday | V=IR & resistance | Solve V=IR problems, explain variable resistors. / 解 V=IR 题，解释变阻器。 |
| Week 2 Wednesday | Sound waves | Explain echo, sonar; use v=fλ. / 解释回声、声纳；使用 v=fλ。 |
| Week 2 Thursday | Light reflection/refraction | Draw ray diagrams for mirrors and lenses. / 画镜面和透镜的光路图。 |
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