KS3 CAIE Science: Vocabulary & Terminology Quick Memorization Guide | KS3 CAIE 科学：词汇术语速记指南

📚 KS3 CAIE Science: Vocabulary & Terminology Quick Memorization Guide | KS3 CAIE 科学：词汇术语速记指南

Mastering science in Key Stage 3 isn’t just about understanding concepts – it’s also about speaking the language of science. From ‘photosynthesis’ to ‘electromagnetic spectrum’, each term carries precise meaning. This guide will help you learn, remember and use scientific vocabulary confidently, turning tricky words into long-lasting knowledge.

掌握 KS3 科学并不只是理解概念，还在于学会用科学的语言表达。从 ‘photosynthesis’ (光合作用) 到 ‘electromagnetic spectrum’ (电磁波谱)，每个术语都有精准的含义。本指南将帮助你学习、记忆并自信地使用科学词汇，让难记的术语转化为长久不忘的知识。

1. Why Vocabulary Matters in KS3 Science | 为何词汇在KS3科学中如此重要

Scientific vocabulary is the foundation of every topic in biology, chemistry and physics. When you know what ‘diffusion’ or ‘neutralisation’ means, you can follow explanations, answer exam questions accurately and link ideas across the syllabus. Without a solid grasp of terminology, even simple concepts can feel confusing.

科学词汇是生物、化学和物理各个主题的基础。当你明白 ‘diffusion’ (扩散) 或 ‘neutralisation’ (中和) 的含义时，你就能跟上讲解，准确回答考题，并在整个课程中串联各个知识点。如果术语掌握不牢，哪怕简单的概念也可能让人感到困惑。

2. Root Words and Prefixes – The Building Blocks | 词根与前缀 – 构建模块

Many scientific terms are built from Greek or Latin roots. Learning these building blocks unlocks the meaning of dozens of words. For example, ‘bio-‘ means life, so biology is the study of life, and biodegradable means can be broken down by living things.

许多科学术语源自古希腊语或拉丁语词根。掌握这些构词元素就能破解大量单词的含义。例如 ‘bio-‘ 表示生命，所以 biology 是研究生命的学科，而 biodegradable 表示可以被生物分解。

bio- (life / 生命): biology, biomass, biome
chem- (chemical / 化学): chemistry, chemotherapy, chemosynthesis
photo- (light / 光): photosynthesis, photon, photograph
therm- (heat / 热): thermal, thermometer, endothermic
hydro- (water / 水): hydrogen, hydration, hydroelectric
micro- (small / 微小): microscope, microorganism, microbe
mono- (one / 一): monomer, monatomic, monochrome
poly- (many / 多): polymer, polysaccharide, polyatomic

Whenever you encounter a new term, break it into prefix + root + suffix. This habit trains your brain to spot patterns, which speeds up memorisation.

每当遇到新术语时，不妨拆分成前缀 + 词根 + 后缀。这个习惯能训练大脑寻找规律，从而加快记忆速度。

3. Suffixes that Tell a Story | 讲述故事的词缀

Suffixes often indicate what kind of word you are dealing with – a process, a measurement, a state or a study. Recognising them helps you categorise terms immediately.

后缀通常能提示词性——是一个过程、一种测量、一种状态还是一门学科。识别后缀能帮你立刻给术语归类。

-ology (study of / 学科): biology, geology, ecology
-meter (measuring device / 测量工具): thermometer, barometer, ammeter
-scope (instrument for viewing / 观察仪器): microscope, telescope, stethoscope
-sis / -tion (process or condition / 过程或状态): photosynthesis, respiration, oxidation, solution
-ic / -ous (adjective ending / 形容词后缀): acidic, ferrous, magnetic, luminous
-ide (simple compound ending / 简单化合物后缀): oxide, chloride, sulfide
-ate (compound with oxygen / 含氧酸盐): sulfate, nitrate, carbonate

When revising, group words by suffix – you’ll notice that thermometer, barometer and ammeter all measure something, which helps link the terms together.

复习时按后缀把单词分组，你会发现 thermometer, barometer 和 ammeter 都跟测量有关，这有助于把术语联系在一起。

4. Biology Terminology: Organisms and Life Processes | 生物学术语：生物体与生命过程

KS3 biology introduces key terms about cells, life processes and ecosystems. Here are some must-know words and simple ways to remember them.

KS3 生物会介绍关于细胞、生命过程和生态系统的关键术语。以下是一些必会词汇及简单记忆方法。

Cell – the basic unit of life. Think of it as a tiny building block. / 细胞：生命的基本单位，想象成微小的积木块。
Nucleus – controls the cell; ‘nucleus’ sounds like ‘nucleus of a team’ – the boss. / 细胞核：控制细胞；发音类似 ‘nucleus’ 想到核心领导者。
Cytoplasm – jelly-like substance where reactions occur. ‘Cyto-‘ means cell, ‘plasm’ means fluid. / 细胞质：发生反应的胶状物质；’cyto-‘ 指细胞，’plasm’ 指液体。
Photosynthesis – process by which plants make food using light. Photo (light) + synthesis (putting together). / 光合作用：植物利用光制造养分的过程。Photo (光) + synthesis (合成)。
Respiration – release of energy from food. Remember ‘re-spir-ation’ – breathing out energy. / 呼吸作用：从食物中释放能量。可以联想 ‘re-spir-ation’ — 呼出能量。
Diffusion – movement of particles from a high concentration to low concentration. Picture a drop of ink spreading in water. / 扩散：粒子从高浓度区域向低浓度区域运动。想象一滴墨水在水中扩散。
Ecosystem – community of organisms interacting with their environment. Eco (environment) + system. / 生态系统：生物群落与其环境相互作用的系统。Eco (环境) + system。

Create flash cards with the word on one side and a simple diagram or one-word hint on the other. The visual link will anchor the meaning.

制作单词卡，一面写术语，另一面画简图或写一个提示词。视觉联想能牢固锁定含义。

5. Chemistry Terminology: Atoms, Elements and Reactions | 化学术语：原子、元素与反应

Chemistry has its own language of matter. Getting comfortable with these terms early makes future topics much easier.

化学有其描述物质的专属语言。早点熟悉这些术语能让后续学习变得容易得多。

Atom – the smallest particle of an element. ‘A-tom’ – think of it as ‘not cut’ (from Greek atomos). / 原子：元素的最小粒子。来自希腊语 ‘不可分割’。
Element – a substance made of only one type of atom. Like a pure letter in the alphabet of matter. / 元素：只由一种原子组成的物质。如同物质字母表中的单个字母。
Compound – two or more different elements chemically bonded. Remember ‘com’ (together) + ‘pound’ (put). / 化合物：两种或以上不同元素通过化学键结合。’com’ (共同) + ‘pound’ (放置)。
Mixture – substances physically combined, not chemically. A salad, not a cake. / 混合物：物质仅通过物理方式混合，未发生化学反应。像沙拉，不是蛋糕。
Reactant – starting substance in a reaction. / 反应物：反应起始的物质。
Product – substance formed in a reaction. / 生成物：反应中形成的物质。
Acid – substance with pH less than 7, releases H⁺ ions. / 酸：pH 小于 7 的物质，释放氢离子。
Alkali – soluble base, pH greater than 7, releases OH⁻ ions. / 碱：可溶性碱，pH 大于 7，释放氢氧根离子。
Neutralisation – reaction between an acid and a base to form salt and water. / 中和：酸与碱反应生成盐和水。

When memorising chemical terms, use word equations to visualise the relationship: Acid + Alkali → Salt + Water. This pattern makes neutralisation unforgettable.

记忆化学术语时，可以用文字方程式来可视化关系：酸 + 碱 → 盐 + 水。这个模式让中和反应难以忘记。

6. Physics Terminology: Forces, Energy and Waves | 物理术语：力、能量与波

Physics terms describe how the universe behaves. Understanding these words helps you model everything from falling apples to electric circuits.

物理术语描述宇宙的运作方式。理解这些词汇能帮助你用模型解释从下落的苹果到电路的各种现象。

Force – a push or pull. Measured in newtons (N). / 力：推或拉。单位是牛顿 (N)。
Mass – amount of matter in an object (kg). Stays the same everywhere. / 质量：物体所含物质的多少 (kg)，在任何地方都不变。
Weight – force of gravity on a mass (N). Changes with location. Weight = mass × gravitational field strength. / 重力：引力作用于质量上的力 (N)，随地点变化。重量 = 质量 × 引力场强度。
Energy – ability to do work. Measured in joules (J). / 能量：做功的能力，单位为焦耳 (J)。
Kinetic energy – energy of motion. ‘Kinetic’ sounds like ‘kinetic = moving’. / 动能：运动的能量。’kinetic’ 听起来像 ‘运动的’。
Potential energy – stored energy due to position or state. / 势能：因位置或状态而储存的能量。
Wave – disturbance that transfers energy. / 波：传递能量的扰动。
Frequency – number of waves per second, measured in hertz (Hz). / 频率：每秒波的数量，单位赫兹 (Hz)。
Amplitude – maximum displacement from rest position. Linked to loudness of sound or brightness of light. / 振幅：偏离平衡位置的最大位移。与声音的响度或光的亮度有关。

Create a personal glossary where you write each physics term, its definition, units and a real-life example. For instance, alongside ‘kinetic energy’, note ‘a moving car’.

创建个人词汇表，为每个物理术语写下定义、单位和现实例子。例如在 ‘动能’ 旁写上 ‘行驶的汽车’。

7. Memory Techniques: Mnemonics and Acronyms | 记忆技巧：助记符与首字母缩略词

Mnemonics turn dull lists into silly, memorable sentences. They are especially useful for KS3 life processes, reactivity series and wave properties.

助记符能将枯燥的列表转化为荒诞而难忘的句子。它们对 KS3 的生命过程、活动性顺序和波的性质特别有用。

MRS GREN – seven life processes: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, Nutrition. / 七个生命过程：运动、呼吸、感应、生长、繁殖、排泄、营养。

OIL RIG – Oxidation Is Loss, Reduction Is Gain (of electrons). / 氧化是失去电子，还原是得到电子。

ROY G BIV – colours of visible spectrum: Red, Orange, Yellow, Green, Blue, Indigo, Violet. / 可见光谱颜色顺序：红橙黄绿蓝靛紫。

King Philip Can Only Find Green Socks – biology classification: Kingdom, Phylum, Class, Order, Family, Genus, Species. / 生物分类：界、门、纲、目、科、属、种。

When you invent your own mnemonic, the personal connection strengthens memory even more.

当你自己创编助记句时，个人化的联想能进一步强化记忆。

8. Flashcards and Active Recall | 抽认卡与主动回忆

Flashcards are not just for looking – they are for testing. The key is active recall: read the term, try to remember the meaning before flipping. This builds stronger neural pathways than simply re-reading notes.

抽认卡不是用来看的，而是用来测试的。关键在于主动回忆：看到术语，先回想含义再翻面。这比反复读笔记更能建立牢固的神经通路。

Write the scientific term on one side. On the other, write a definition, a drawing, an example and a linking word. For ‘evaporation’, you could write: ‘liquid to gas at surface, below boiling point; e.g. puddle drying; link to condensation’.

一面写科学术语。另一面写出定义、简图、例子和一个关联词。如 ‘蒸发’：液体在表面变成气体，低于沸点；例：水坑变干；关联：冷凝。

Use digital flashcard apps that schedule reviews based on your performance. This automates spaced repetition, which we’ll explore next.

使用能根据你的表现安排复习的数字抽认卡软件，这样可以自动实现间隔重复，我们接下来就会介绍这个方法。

9. The Feynman Technique: Teach to Learn | 费曼技巧：以教为学

Nobel laureate Richard Feynman believed you never truly understand something until you can explain it simply. Choose a concept like ‘density’ and try to teach it to a friend or even an imaginary student in plain English. If you stumble, you’ve found a gap.

诺贝尔奖得主费曼认为，只有能用简单语言解释清楚，才算真正理解了一件事。选择一个概念，例如 ‘密度’，试试用平实的英语把它教给朋友，甚至是内心想象的学生。如果卡住了，就说明找到了知识缺口。

This technique is incredibly effective for vocabulary because it forces you to connect terms to everyday examples. Density isn’t just ‘mass per unit volume’ – it’s why oil floats on water. Explaining this aloud embeds the term in your long-term memory.

这个方法对词汇记忆特别有效，因为它迫使你把术语和日常生活联系起来。密度不仅仅是 ‘单位体积的质量’——它也是油浮在水上的原因。把这种解释大声说出来，术语就会刻入长期记忆中。

10. Making Connections: Concept Maps | 建立联系：概念图

Our brains remember information best when it’s connected to existing knowledge. A concept map is a visual tool that links terms together with arrows and connecting phrases. For a topic like ‘Energy’, you might map out forms of energy (kinetic, thermal, chemical…) and show transformations between them.

我们的大脑在信息与已有知识相联系时记忆效果最好。概念图就是一种用箭头和连接短语将术语联系起来的可视化工具。对于 ‘能量’ 这个话题，你可以画出一张图，列出能量的形式（动能、热能、化学能……），并标出它们之间的转化关系。

Start with a central term, such as ‘Particle theory’, and radiate out to ‘solid’, ‘liquid’, ‘gas’, ‘diffusion’, ‘pressure’. This web helps you see how all the vocabulary works together, not as isolated words.

以中心术语如 ‘粒子理论’ 出发，辐射出 ‘固体’、’液体’、’气体’、’扩散’、’压力’。这个网络能让你看清所有词汇是如何协同运作的，而不是孤立的单词。

11. Daily Practice and Spaced Repetition | 日常练习与间隔重复

Cramming the night before a test may help you recognise a few terms, but true mastery comes from regular, spaced practice. Review new words within 24 hours, then again after a few days, a week and a month. This pattern exploits the ‘spacing effect’ to move knowledge from short-term to long-term memory.

考前突击或许能让你认出一些术语，但真正的掌握来自有规律、有间隔的练习。新词在24小时内复习一次，然后隔几天、一周、一个月再复习。这种模式利用了 ‘间隔效应’，将知识从短期记忆转移到长期记忆。

Set aside just 5–10 minutes each day for vocabulary revision. Rotate through biology, chemistry and physics terms. Consistency is far more powerful than long but infrequent sessions.

每天只留出5–10分钟复习术语。轮流温习生物、化学和物理词汇。坚持规律复习远比长时间但低频次的突击有效得多。

12. Common Pitfalls and Confusing Pairs | 常见陷阱与易混淆词组

Some word pairs look or sound similar but have very different meanings. Identifying these early prevents confusion in exams.

有些词对看起来或听起来相似，但含义大相径庭。及早识别它们可以避免考试时混淆。

Term A	Term B	Key Difference / 主要区别
Mass / 质量	Weight / 重量	Mass is constant; weight varies with gravity. / 质量不变；重量随引力变化。
Heat / 热量	Temperature / 温度	Heat is energy transfer; temperature measures average kinetic energy. / 热量是能量传递；温度测量平均动能。
Element / 元素	Compound / 化合物	Element: one type of atom; compound: two or more chemically bonded. / 元素只有一种原子；化合物是两种以上原子化学结合。
Atom / 原子	Molecule / 分子	Atom is smallest part of element; molecule is group of atoms bonded together (can be same or different). / 原子是元素的最小单位；分子是一组键合原子（可相同或不同）。
Physical change / 物理变化	Chemical change / 化学变化	Physical: no new substance; chemical: new substance formed. / 物理变化不产生新物质；化学变化产生新物质。
Speed / 速率	Velocity / 速度	Speed is scalar (no direction); velocity is vector (direction matters). / 速率是标量（无方向）；速度是矢量（有方向）。

Highlight these tricky pairs in your notes and write a clear distinguishing sentence for each. This active comparison makes you less likely to mix them up when under pressure.

在笔记中高亮这些易混淆的词对，并为每组写一句清晰的区别说明。这种主动对比能让你在面对考试压力时也不易出错。

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KS3 CAIE Science: Vocabulary & Terminology Quick Memorization Guide | KS3 CAIE 科学：词汇术语速记指南