📚 Mind Map Quick Revision for GCSE AQA Physics | GCSE AQA 物理：思维导图速记
This article distils the entire GCSE AQA Physics syllabus into a connected mind map, linking fundamental ideas to help you revise fast and deeply. Each section presents a core topic with key nodes, equations, and quick summaries in both English and Chinese.
本文将GCSE AQA物理全部内容浓缩为一张互联的思维导图，把核心概念串联起来，帮助快速深层复习。每个小节以英中双语呈现中心主题、关键节点、重要方程与速记要点。
1. Energy Stores & Systems | 能量储存与系统
A mind map for ‘Energy’ starts with the central node: Energy Stores. Branches lead to kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear, and magnetic stores. A system is an object or group of objects; energy changes within a system when it is transferred between stores or to the surroundings via work done or heating.
“能量”思维导图的中心节点是：能量储存。分支指向动能、重力势能、弹性势能、热能、化学能、核能和磁能储存。系统是一个或一组物体；系统内能量发生变化时，能量通过做功或加热在储存库之间或向周围环境转移。
Kinetic Energy: Eₖ = ½ m v² | Gravitational Potential Energy: Eₚ = m g h
In these equations, m is mass in kg, v is speed in m/s, g is gravitational field strength (9.8 N/kg), and h is height in m. The elastic potential energy store of a stretched spring is given by Eₑ = ½ k e², where k is spring constant and e is extension.
方程中，m为质量(kg)，v为速率(m/s)，g为重力场强度(9.8 N/kg)，h为高度(m)。拉伸弹簧的弹性势能为Eₑ = ½ k e²，k为劲度系数，e为伸长量。
2. Energy Transfers & Efficiency | 能量转移与效率
From the central idea of Energy Transfers, four pathways emerge: mechanical work (forces moving an object), electrical work (charges moving through a potential difference), heating (conduction, convection, radiation), and radiation (light, sound). The mind map connects these to ‘power’ and ‘efficiency’.
从“能量转移”中心概念延伸出四条路径：机械做功（力移动物体）、电做功（电荷通过电位差）、加热（传导、对流、辐射）和辐射（光、声）。思维导图将这些关联到“功率”和“效率”。
Power: P = E / t = W / t | Efficiency = Useful Output Energy / Total Input Energy
In a Sankey diagram or simple fraction, efficiency can be expressed as a percentage. The mind map links ‘wasted energy’ to thermal energy spreading into the surroundings, which increases entropy and cannot be fully recovered.
在桑基图或简单分数中，效率可用百分比表示。思维导图将“浪费的能量”与耗散到周围环境的热能相连，这部分能量增加熵且无法完全回收。
3. Electricity: Circuits & Components | 电路与元件
The electricity branch begins with ‘charge’, ‘current’, and ‘potential difference’. A series mind map shows how current is the same everywhere in a series circuit, while potential difference splits. In parallel, current divides and potential difference is the same across branches.
电学分支从“电荷”、“电流”和“电位差”开始。串联思维导图显示串联电路中电流处处相等，电位差分配；并联电路中电流分支，各支路电位差相等。
| Property | Series Circuit | Parallel Circuit |
| Current I | Same at all points | Splits across branches |
| Potential Difference V | Shared across components | Same across each branch |
| Resistance R | R_total = R₁ + R₂ + … | 1/R_total = 1/R₁ + 1/R₂ + … |
Important component symbols to recall: fixed resistor, variable resistor, lamp, diode, LED, thermistor, LDR, fuse, and cell. In a mind map, place the circuit symbol next to its name and link to its I-V characteristic.
需记住的重要元件符号：定值电阻、变阻器、灯泡、二极管、发光二极管、热敏电阻、光敏电阻、保险丝和电池。思维导图中，将电路符号与名称并列，并连接到其伏安特性曲线。
4. Electricity: Power & Energy Transfer in Circuits | 电路中的功率与能量转移
Two key equations branch from ‘electrical power’: P = I V and P = I² R. Since efficiency does not apply to purely resistive loads, the mind map connects these to energy transferred E = Q V and E = I V t. The unit kilowatt-hour is linked to large domestic energy use calculations.
从“电功率”分出两个核心方程：P = I V 和 P = I² R。对于纯电阻负载，这些直接关联能量转移 E = Q V 和 E = I V t。千瓦时单位与家庭大电量计算相连。
P = I V | P = I² R | E = P t (t in seconds for joules, or hours for kWh)
In the National Grid mind map, step-up and step-down transformers appear, linking high voltage to low current transmission to reduce heating losses. Students should remember V_primary / V_secondary = N_primary / N_secondary for an ideal transformer.
在国家电网思维导图中，升压变压器和降压变压器出现，将高电压低电流输电与减少热损耗联系起来。学生应记住理想变压器公式：原边电压 / 副边电压 = 原边匝数 / 副边匝数。
5. Particle Model & Density | 粒子模型与密度
The particle model mind map describes solids, liquids, and gases through arrangement, motion, and spacing of particles. Density links mass and volume, and the formula ρ = m / V is a key node. Often you need to measure density of regular and irregular objects.
粒子模型思维导图通过粒子的排列、运动和间距描述固、液、气三态。密度连接质量和体积，公式 ρ = m / V 是关键节点。常需要测量规则和不规则物体的密度。
Density ρ = m / V (kg/m³ = kg ÷ m³)
For a liquid, a measuring cylinder gives volume; for an irregular solid, the displacement method in a eureka can is used. The mind map also links to ‘Internal Energy’ – the total kinetic and potential energy of particles in a system.
对于液体，用量筒测体积；对于不规则固体，使用溢流罐的排水法。思维导图还连接到“内能”——系统内粒子动能与势能的总和。
6. Internal Energy & Changes of State | 内能与状态变化
When a substance is heated, its internal energy rises: particle kinetic energy increases, and if a phase change occurs, potential energy increases. A mind map shows temperature staying constant during melting or boiling, with energy being used to break bonds.
物质受热时内能增加：粒子动能上升；如果发生相变，势能增加。思维导图显示熔化或沸腾过程中温度保持恒定，能量用于打破粒子间的键。
Specific Heat Capacity: ΔE = m c Δθ | Specific Latent Heat: E = m L
The specific heat capacity c is the energy required to raise 1 kg of a substance by 1 °C. Specific latent heat L is the energy per kg to change state at constant temperature (fusion or vaporisation). Link to graphs of temperature against time showing plateaus.
比热容c是使1 kg物质温度升高1 °C所需的能量。比潜热L是每千克物质在恒定温度下改变状态所需的能量（熔化或汽化）。连接到温度-时间图上的平台区。
7. Atomic Structure & Radioactivity | 原子结构与放射性
The atom mind map: nucleus containing protons and neutrons, surrounded by electrons in shells. Key numbers: atomic (proton) number Z, mass number A. Isotopes have same Z but different A. Radioactive decay branches into alpha, beta, and gamma emission.
原子思维导图：原子核包含质子和中子，核外电子分层排布。关键数字：原子（质子）数Z，质量数A。同位素具有相同Z但不同A。放射性衰变分支为α、β和γ辐射。
| Radiation | Nature | Penetration | Ionising Power |
| Alpha α | Helium nucleus (2p+2n) | Stopped by paper | Very high |
| Beta β⁻ | Fast electron | Few mm of Al | Medium |
| Gamma γ | Electromagnetic wave | Thick lead or concrete | Low |
Decay equations must balance mass and atomic numbers. For example, uranium-238 decays: ²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He. Half-life is the time for half of a sample to decay; use graphs to find half-life and link to radioactive dating and tracers.
衰变方程必须质量数和原子数平衡。例如铀-238衰变：²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He。半衰期是样品衰变一半所需的时间；利用曲线求半衰期，关联放射性定年法和示踪剂。
8. Forces & Newton’s Laws | 力与牛顿定律
The forces mind map splits into contact (friction, tension, normal reaction, air resistance) and non-contact forces (gravity, electrostatic, magnetism). Free-body diagrams show forces as arrows on a point object. Resultant force leads to acceleration.
力的思维导图分为接触力（摩擦、张力、法向反作用力、空气阻力）和非接触力（引力、静电、磁力）。受力图将力表示为质点上的箭头。合外力导致加速度。
Newton II: F = m a | Weight: W = m g
Moment of a force (torque) = force × perpendicular distance from pivot. Levers and gears are applications. In equilibrium, total clockwise moments = total anticlockwise moments. The mind map links pressure to force over area: P = F / A.
力矩 = 力 × 到支点的垂直距离。杠杆与齿轮是应用。平衡时，顺时针力矩之和 = 逆时针力矩之和。思维导图将压强与力及面积相连：P = F / A。
9. Waves: Properties & Phenomena | 波的性质与现象
Waves transfer energy without transferring matter. The mind map separates transverse (light, ripples on water, seismic S) and longitudinal waves (sound, seismic P). Key wave terms: amplitude, wavelength λ, frequency f, period T, wave speed v = f λ.
波传递能量而不传递物质。思维导图区分横波（光、水波、地震S波）和纵波（声波、地震P波）。关键波术语：振幅、波长λ、频率f、周期T、波速v = f λ。
Reflection: angle of incidence = angle of reflection. Refraction: wave changes speed and direction crossing a boundary due to density change. A mind map of the electromagnetic spectrum runs from radio waves to gamma rays, with uses and dangers at each range.
反射：入射角 = 反射角。折射：波穿越界面时因密度变化而改变速度和方向。电磁波谱思维导图从无线电波到伽马射线，每个波段关联用途与危害。
All EM waves travel at 3.0 × 10⁸ m/s in vacuum.
Link electromagnetic waves to their properties: radio (communication), microwave (cooking, satellite transmissions), infrared (thermal imaging), visible light (vision), ultraviolet (fluorescent lamps, tanning), X-rays (medical imaging), gamma rays (cancer treatment, sterilisation). Higher frequency means higher photon energy and greater ionising danger.
将电磁波与性质关联：无线电（通信）、微波（烹饪、卫星传输）、红外（热成像）、可见光（视觉）、紫外（荧光灯、晒黑）、X射线（医学成像）、伽马射线（癌症治疗、灭菌）。频率越高，光子能量越大，电离危险越大。
10. Magnetism & Electromagnetism | 磁学与电磁学
A central magnet node yields like poles repel, unlike attract. Earth’s magnetic field resembles a bar magnet. Electromagnetism: a current-carrying wire creates a circular magnetic field; a solenoid strengthens the field. The motor effect (F = B I L) links current, magnetic field, and force.
磁中心节点引出同性相斥、异性相吸。地磁场类似条形磁铁。电磁：载流导线产生环形磁场；螺线管增强磁场。电动机效应（F = B I L）联系电流、磁场和力。
Motor Effect: F = B I L (for wire perpendicular to B-field)
Fleming’s Left-Hand Rule: thumb – force (motion), first finger – field, second finger – current. Electromagnetic induction: moving a wire in a magnetic field or changing the field induces a potential difference. The generator effect produces a.c.; a dynamo produces d.c. Transformers only operate on a.c. and step voltage up or down.
左手定则：拇指—力（运动），食指—磁场，中指—电流。电磁感应：导线切割磁感线或磁场变化会感应出电位差。发电机效应产生交流电；直流发电机产生直流电。变压器仅工作在交流电下，可升压或降压。
11. Space Physics (Separate Physics only) | 空间物理（仅独立物理）
Our solar system mind map: the Sun, eight planets, dwarf planets, moons, asteroids, comets. Orbits are elliptical; gravity provides the centripetal force. The life cycle of a star branch depends on its mass: low mass → red giant → white dwarf; high mass → red supergiant → supernova → neutron star or black hole.
太阳系思维导图：太阳、八大行星、矮行星、卫星、小行星、彗星。轨道为椭圆；引力提供向心力。恒星生命周期分支取决于质量：低质量→红巨星→白矮星；高质量→红超巨星→超新星→中子星或黑洞。
Red-shift of light from distant galaxies shows the universe is expanding. The Big Bang theory is the leading model. The mind map links red-shift to Doppler effect: when a source moves away, observed wavelength increases. Cosmic microwave background radiation is evidence for the Big Bang.
遥远星系光线的红移表明宇宙在膨胀。大爆炸理论是主流模型。思维导图将红移与多普勒效应关联：波源远离时观察波长变长。宇宙微波背景辐射是大爆炸的证据。
12. Equations Grid & Quick Recall | 方程网格与快速回忆
Build a final summary mind map with all required equations grouped by topic, using colour coding. For example, ‘Forces & Motion’ equations: v = s / t, a = Δv / t, F = m a, W = m g, p = m v, M = F d, P = F / A. ‘Energy’ equations: Eₖ = ½ m v², Eₚ = m g h, efficiency, P = E / t, E = P t.
构建最终的总结思维导图，按主题分组排列所有必须掌握的方程，并用颜色标注。例如“力与运动”方程：v = s / t、a = Δv / t、F = m a、W = m g、p = m v、M = F d、P = F / A。“能量”方程：Eₖ = ½ m v²、Eₚ = m g h、效率、P = E / t、E = P t。
| Topic | Key Equations |
| Electricity | Q = I t, V = I R, P = I V, E = Q V, E = I V t |
| Particle Model | ρ = m / V, ΔE = m c Δθ, E = m L |
| Waves | v = f λ, T = 1 / f, wave speed on strings |
| Magnetism | F = B I L, N_primary / N_secondary = V_primary / V_secondary |
Use the mind map structure to test yourself: hide the equation node and try to recall it from the topic node. Regular practice with units: all equations must use SI units (metres, kilograms, seconds, amperes, newtons, joules, watts, etc.).
利用思维导图结构进行自测：遮住方程节点，尝试从主题节点回忆方程。日常练习注意单位：所有方程必须使用国际单位制（米、千克、秒、安培、牛顿、焦耳、瓦特等）。
Published by TutorHao | Physics Revision Series | aleveler.com
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