KS3 Edexcel Physics: Quick Memorisation Guide for Key Vocabulary Terms | KS3 Edexcel 物理：词汇术语速记指南

📚 KS3 Edexcel Physics: Quick Memorisation Guide for Key Vocabulary Terms | KS3 Edexcel 物理：词汇术语速记指南

Mastering the key vocabulary in KS3 Physics is essential for understanding concepts and acing your Edexcel exams. This guide provides simple explanations and clever memory tricks for the most important terms across forces, energy, waves, electricity and more. Let’s turn tricky terminology into easy-to-recall knowledge!

掌握 KS3 物理的关键词汇是理解概念并在 Edexcel 考试中取得好成绩的基础。这本速记指南为力、能量、波、电学等主题中最重要的术语提供了简要解释和巧妙的记忆技巧。让我们把难懂的术语变成容易回忆的知识！

1. Forces and Motion | 力与运动

Forces describe interactions that change the motion or shape of an object. The three foundational terms to grasp are force, mass, and weight.

力描述了改变物体运动或形状的相互作用。需要掌握的三个基础术语是力、质量和重量。

Force: A push or pull acting on an object, measured in newtons (N). A force can make an object speed up, slow down, change direction or deform. Remember: Force starts with an F, like a finger giving a push. Unbalanced forces cause acceleration.

力：作用在物体上的推或拉，以牛顿（N）为单位。力可以使物体加速、减速、改变方向或发生形变。记忆：力字让人联想到用力的动作，不平衡的力会产生加速度。

Mass: The amount of matter in an object, measured in kilograms (kg). Mass is a scalar quantity and stays the same everywhere in the universe. Memory trick: think of a 1 kg bag of sugar – its mass is the same on Earth, on the Moon or floating in space.

质量：物体所含物质的多少，单位是千克（kg）。质量是标量，在宇宙任何地方都保持不变。记忆诀窍：想象一包 1 kg 的糖——它的质量在地球、月球或太空中漂浮时都相同。

Weight: The force of gravity acting on a mass, also measured in newtons. On Earth, weight is calculated by Weight = mass × gravitational field strength, or W = m × g (g ≈ 9.8 N/kg). Your weight changes with gravity, but your mass stays constant. Recall: Weight is the reading on a weighing scale.

重量：作用在质量上的重力，单位也是牛顿。在地球上，重量计算公式为 重量 = 质量 × 重力场强度，即 W = m × g（g 约 9.8 N/kg）。你的重量会随重力变化，但质量不变。记忆：重量就是体重秤上显示的力。

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

Energy exists in different stores and can be transferred between them. The key stores you must know are kinetic energy, gravitational potential energy and thermal (heat) energy.

能量以不同的形式储存，并能在不同储存之间转移。你必须掌握的能量储存形式包括动能、重力势能和热能。

Kinetic Energy (KE): The energy an object has because of its motion. Any moving object – a rolling ball, a running person – has kinetic energy. It depends on mass and speed. Formula: KE = ½ × m × v². Memory: “Kinetic” sounds like “kicking” – think of kicking a football to give it motion energy.

动能 (KE)：物体由于运动而具有的能量。任何运动的物体——滚动的球、奔跑的人——都有动能。它取决于质量和速度。公式：动能 = ½ × 质量 × 速度²。记忆：“动能”即“运动之能”，想象踢足球让它运动起来。

Gravitational Potential Energy (GPE): Energy stored in an object because of its height above the ground. The higher the object, the more GPE it stores. Formula: GPE = m × g × h (mass × gravity × height). Picture a roller coaster at the top of a hill – it has maximum potential to fall.

重力势能 (GPE)：物体由于位于高处而储存的能量。物体越高，储存的重力势能就越多。公式：GPE = m × g × h（质量 × 重力场强度 × 高度）。想象过山车在最高点——它具有最大的“下落潜能”。

Thermal Energy: The total kinetic energy of all the particles inside a substance. The hotter an object, the more its particles vibrate or move, so the higher its thermal energy. Memory: Thermal is linked to thermometer – both measure heat-related energy.

热能：物质内所有粒子动能的总和。物体越热，粒子振动或运动越剧烈，因此热能越高。记忆：热能与温度计相关联——两者都与热量有关。

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3. Waves and Sound | 波与声音

Waves transfer energy without transferring matter. Three essential wave properties you need to memorise are amplitude, frequency, and wavelength.

波传递能量而不传递物质。你需要记住的三个基本波的性质是振幅、频率和波长。

Amplitude: The maximum displacement of a point on a wave from its rest position. In a sound wave, greater amplitude means a louder sound. Memory: Amplitude helps amplify the sound – imagine a speaker cone moving further back and forth to make a louder noise.

振幅：波上一点偏离平衡位置的最大位移。在声波中，振幅越大，声音越响。记忆：振幅让声音增大——想象扬声器纸盆前后移动幅度更大，产生更响亮的声音。

Frequency: The number of complete waves passing a point per second, measured in hertz (Hz). High frequency sounds have a high pitch (like a whistle); low frequency sounds have a low pitch (like a drum). Memory: Frequency equals how frequent the waves arrive.

频率：每秒通过某点的完整波的数量，单位是赫兹（Hz）。高频率的声音音调高（如哨声）；低频率的声音音调低（如鼓声）。记忆：频率就是波到达的频繁程度。

Wavelength: The distance between two corresponding points on adjacent waves, such as crest to crest or trough to trough. It is usually measured in metres. Memory: It is literally the length of one complete wave.

波长：相邻波上两个对应点之间的距离，例如波峰到波峰或波谷到波谷。通常以米为单位。记忆：字面意思就是一个完整波的长度。

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4. Electricity and Circuits | 电与电路

Electric circuits allow charge to flow. The three central quantities you must distinguish are current, voltage (potential difference), and resistance.

电路允许电荷流动。你必须区分的三个核心物理量是电流、电压（电势差）和电阻。

Current: The rate of flow of electric charge, measured in amperes (A). In a single closed loop, the current is the same everywhere. Memory: Think of current like water flowing in a river – the flow rate of water is similar to the flow rate of charge.

电流：电荷流动的速率，单位是

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