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Year 9 OCR Physics Key Terms Memory Guide | Year 9 OCR 物理:词汇术语速记指南

2026-07-18 11:40 · 本文部分内容由AI辅助创作

📚 Year 9 OCR Physics Key Terms Memory Guide | Year 9 OCR 物理:词汇术语速记指南

This article provides a bilingual memory guide for Year 9 OCR Physics, covering essential key terms across ten major topics. Each term is explained with a clear English definition followed by a Chinese equivalent and a memory tip to help you retain the vocabulary efficiently. Whether you are revising for a test or building a solid foundation for GCSE, this guide will strengthen your scientific language skills.

本文提供 Year 9 OCR 物理的中英双语术语速记指南,涵盖十大主题的核心词汇。每个术语都有清晰的英文定义、中文对应解释以及记忆小窍门,帮助你高效地掌握这些专业词汇。无论是准备测验还是为 GCSE 打基础,这份指南都能提升你的科学语言能力。


1. Energy Stores and Transfers | 能量储存与转移

Kinetic store: energy possessed by a moving object.

动能储存: 运动物体具有的能量。记法:Kinetic 与运动(Kinetic)有关,想象一个奔跑的人 (Kinetic → Kicking)。

Gravitational potential store: energy stored in an object raised above the ground.

重力势能储存: 物体被抬高后储存的能量。记法:Gravitational → 重力,Potential → 潜力,高处的物体有“下落”的潜力。

Thermal store: energy related to the temperature of an object.

热能储存: 与物体温度相关的能量。记法:Thermal → 热量,想象温度计里的液体上升。

Conservation of energy: energy cannot be created or destroyed, only transferred between stores.

能量守恒: 能量不能被创造或消灭,只能在储存之间转移。记法:守恒 = 守住,就像银行账户总额不变,只是钱从一个账户转到另一个。

Work done: energy transferred when a force moves an object (work = force × distance).

做功: 力使物体移动时转移的能量(功 = 力 × 距离)。记法:Work 使人想到“工作”,只有移动了物体才做了物理意义上的功。


2. Electricity Basics | 电学基础

Current: the flow of electric charge, measured in amperes (A).

电流: 电荷的流动,单位是安培(A)。记法:电流就像水管中水的流动,想成“电子流”。

Potential difference (voltage): the push that drives the current around a circuit, measured in volts (V).

电势差(电压): 推动电流在电路中流动的“推力”,单位是伏特(V)。记法:电压就像水泵的压力,压差越大推动力越强。

Resistance: how much a component reduces the current, measured in ohms (Ω).

电阻: 元件阻碍电流大小的量度,单位是欧姆(Ω)。记法:Resistance → 抵抗,就像狭窄的管道阻止水流。

Series circuit: a single loop circuit where components are connected one after another.

串联电路: 元件一个接一个连接的单回路电路。记法:Series 像一串珠子,逐个排列。

Parallel circuit: a circuit with two or more branches for current to flow through.

并联电路: 有两条或更多支路让电流流过的电路。记法:Parallel 的两条线互相平行,就像铁轨的分叉。


3. Forces and Motion | 力与运动

Force: a push or pull acting on an object, measured in newtons (N).

力: 对物体的推或拉,单位是牛顿(N)。记法:牛顿被苹果砸中,力改变了苹果的运动。

Resultant force: the single force that has the same effect as all the forces acting on an object combined.

合力: 作用在物体上所有力组合后效果等同的一个力。记法:Resultant → 最终的结果力,把多个箭头合并成一个。

Friction: a force that opposes motion between two surfaces in contact.

摩擦力: 阻碍两个接触表面相对运动的力。记法:Friction 就像鞋底与地面摩擦,让你不会滑倒。

Drag: air resistance or fluid resistance that opposes motion through a fluid.

阻力(拖曳力): 空气或液体对在其中运动的物体产生的阻力。记法:Drag 就像在水中奔跑,感到被“拖”住。

Velocity: speed in a given direction (a vector quantity).

速度: 某个方向上的速率(矢量)。记法:Velocity 包含方向,就像说要“向北走 5 m/s”。

Acceleration: the rate of change of velocity, measured in m/s².

加速度: 速度变化的快慢,单位是米每二次方秒(m/s²)。记法:Acceleration → 踩油门加速,速度越来越快。


4. Waves | 波

Wave: a disturbance that transfers energy from one place to another without transferring matter.

波: 将能量从一处传递到另一处的扰动,不传递物质。记法:Wave → 挥手,手在动但人没挪位。

Transverse wave: a wave in which the oscillations are perpendicular to the direction of energy transfer (e.g., light, water waves).

横波: 振动方向与能量传递方向垂直的波(如光波、水波)。记法:Transverse 中的 'trans' 联想到横向,绳子上下抖动而波水平前进。

Longitudinal wave: a wave in which the oscillations are parallel to the direction of energy transfer (e.g., sound waves).

纵波: 振动方向与能量传递方向平行的波(如声波)。记法:Longitudinal → 长向,弹簧前后压缩拉伸。

Amplitude: the maximum displacement from the rest position; relates to the energy carried by the wave.

振幅: 从平衡位置的最大位移;与波携带的能量有关。记法:Amplitude → “放大”的程度,海浪越高振幅越大。

Wavelength: the distance between two consecutive corresponding points on a wave (e.g., peak to peak).

波长: 波上两个相邻相应点之间的距离(如波峰到波峰)。记法:Wavelength → 波的长度,像一把尺子量两个波峰。

Frequency: the number of complete waves passing a point per second, measured in hertz (Hz).

频率: 每秒钟通过某点的完整波的数量,单位是赫兹(Hz)。记法:Frequency → 频繁程度,频率高就是来得快。


5. Particle Model of Matter | 物质粒子模型

Solid: a state of matter with particles closely packed in a regular arrangement, vibrating in fixed positions.

固体: 粒子紧密排列、有规则结构、在固定位置振动的物态。记法:Solid → 坚固,粒子像整齐站队的士兵。

Liquid: state where particles are close together but can move past each other, taking the shape of the container.

液体: 粒子紧密但可滑动,形状随容器而变。记法:Liquid → 流动,像杯中水,粒子可以滚动。

Gas: state where particles are far apart and move rapidly in all directions, filling the available space.

气体: 粒子间距大、快速向四面八方运动,充满可用空间。记法:Gas → 分散,粒子像爆米花机里乱飞的玉米粒。

Internal energy: the total kinetic and potential energy of the particles in a system.

内能: 系统内粒子动能与势能的总和。记法:Internal → 内部的,所有粒子能量的总和就是内能。

Density: mass per unit volume (ρ = m/V).

密度: 单位体积的质量(ρ = m/V)。记法:Density → 密集程度,同样大小的铁块比木块重,因为密度大。

Specific latent heat: the energy required to change the state of 1 kg of a substance without changing its temperature.

比潜热: 改变 1 kg 物质状态而不改变温度所需的能量。记法:Latent → 潜伏的,能量潜伏在状态变化中。


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6. Atomic Structure | 原子结构

Atom: the smallest part of an element that can take part in chemical reactions.

原子: 能参与化学反应的元素的最小单元。记法:Atom → 不可再分(希腊语原意),但物理中还可分。

Nucleus: the positively charged centre of an atom, containing protons and neutrons.

原子核: 原子带正电的中心,包含质子和中子。记法:Nucleus → 核心,像水果的核。

Proton: a positively charged particle found in the nucleus, relative mass 1.

质子: 原子核中带正电的粒子,相对质量为 1。记法:Proton → 正(Positive),与“正”音近,正电荷。

Neutron: a neutral particle in the nucleus, relative mass 1.

中子: 原子核中不带电的粒子,相对质量为 1。记法:Neutron → 中性,与“neutral”同根。

Electron: a negatively charged particle that orbits the nucleus, very small mass.

电子: 带负电的绕核粒子,质量极小。记法:Electron 和“电”有关,负电荷。

Ion: an atom or molecule that has lost or gained electrons, giving it a net electric charge.

离子: 由于失去或获得电子而带净电荷的原子或分子。记法:Ion → 带有电荷的粒子,联想“电离”。


7. Energy Resources | 能源资源

Renewable resource: an energy source that can be replenished as it is used, e.g., solar, wind, tidal.

可再生能源: 使用中可以再生的能源,如太阳能、风能、潮汐能。记法:Renewable → 可以再次(re-)更新(new)的。

Non-renewable resource: energy source that will eventually run out, e.g., coal, oil, natural gas.

不可再生能源: 终将耗尽的能源,如煤、石油、天然气。记法:Non-renewable → 不能更新的,用完就没了。

Fossil fuels: fuels formed from the remains of dead plants and animals over millions of years, such as coal, oil and gas.

化石燃料: 由动植物遗体经过数百万年形成的燃料,如煤、石油和天然气。记法:Fossil → 化石,古生物变成的燃料。

Thermal power station: a facility where fuel is burned to heat water into steam, which drives a turbine connected to a generator.

火力发电站: 燃烧燃料将水加热成蒸汽,驱动汽轮机带动发电机的设施。记法:Thermal → 热量,想想大锅炉烧水。

National Grid: the network of cables and transformers that distributes electricity across the country.

国家电网: 分配电力到全国的电缆和变压器网络。记法:Grid → 网格,像一张覆盖国家的大网。


8. Forces and Pressure | 力与压强

Pressure: force per unit area, often measured in pascals (Pa); pressure = force / area.

压强: 单位面积上的力,单位通常是帕斯卡(Pa);压强 = 力 / 面积。记法:尖细的高跟鞋比平底鞋对地面的压强大,因为面积小。

Atmospheric pressure: the pressure caused by the weight of the air above us, decreasing with altitude.

大气压强: 由我们上方空气重量产生的压强,随高度增加而减小。记法:Atmosphere → 大气,越往高处空气越稀薄,压强越低。

Upthrust: the upward force that a fluid exerts on an object placed in it; related to the weight of fluid displaced.

浮力: 流体对放入其中的物体向上的力;与被排开流体的重量有关。记法:Upthrust → 向上推,船之所以能浮起。

Displacement: in the context of fluids, the volume of fluid pushed aside by an object immersed in it.

排开(排水量): 在流体中,物体浸入时挤开的流体体积。记法:Displace → 移开,就像洗澡时身体让水位上升。


9. Electromagnetic Waves | 电磁波

Electromagnetic spectrum: ⁸ m/s) and include radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays.

电磁波谱: 真空中均以光速(3.0 × 10⁸ m/s)传播的波族,包括无线电波、微波、红外线、可见光、紫外线、X射线和伽马射线。记法:记住顺序:Red Monkeys In Vans Use X-ray Glasses (Radio, Micro, Infrared, Visible, UV, X-ray, Gamma) 从低能到高能。

Radio wave: electromagnetic wave with the longest wavelength and lowest frequency, used for broadcasting.

无线电波: 波长最长、频率最低的电磁波,用于广播。记法:Radio → 无线电,广播电台用的。

Gamma ray: electromagnetic wave with the shortest wavelength and highest frequency, emitted by radioactive decay.

伽马射线: 波长最短、频率最高的电磁波,由放射性衰变放出。记法:Gamma 是希腊字母第三个,联想到核反应,穿透力极强。

Wave speed equation: wave speed = frequency × wavelength (v = f λ).

波速公式: 波速 = 频率 × 波长(v = f λ)。记法:想象一个海浪,速度等于每秒钟多少个波峰(f)乘每个波峰之间的距离(λ)。


10. Circuit Components and Symbols | 电路元件与符号

Cell: a device that converts chemical energy into electrical energy, providing a direct current (d.c.).

电池(单节): 将化学能转化为电能的装置,提供直流电。记法:Cell → 小电池,像手电筒里的单个电池。

Battery: two or more cells connected together to provide a greater potential difference.

电池组: 两个或更多电池串联,提供更大的电势差。记法:Battery → 由多个 cell 组成的“军队”。

Switch (open/closed): a component that can make or break a circuit; open means off, closed means on.

开关(断开/闭合): 接通或断开电路的元件;断开是关,闭合是开。记法:想象门的开关,Closed 是关门,但电路却通了(反直觉,注意区别)。

Fuse: a safety device containing a thin wire that melts if too much current flows, breaking the circuit.

保险丝: 含有细金属丝的安全装置,电流过大时熔化,断开电路。记法:Fuse 和“熔断”有关,牺牲自己保护电路。

Diode: a component that only allows current to flow in one direction.

二极管: 只允许电流单向流动的元件。记法:Di- 意为二,二极管像单向阀门。

Thermistor: a resistor whose resistance decreases as temperature increases.

热敏电阻: 阻值随温度升高而减小的电阻。记法:Therm- 前缀表示热,热了电阻变小,便于传感器使用。

Variable resistor: a resistor whose resistance can be adjusted, often used in dimmer switches.

可变电阻: 阻值可调的电阻,常用于调光器。记法:Variable → 可变的,像音量旋钮。


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