📚 Year 7 Edexcel Physics: Exam Techniques and Marking Criteria | Year 7 Edexcel 物理：答题技巧与评分标准
This article is designed to help Year 7 students following the Edexcel course build strong exam technique in physics. By understanding what examiners expect and how marks are awarded, you can turn your knowledge into higher scores. We will cover the key types of questions, the language of the mark scheme, and the habits that make a difference on test day.
本文旨在帮助学习Edexcel课程的Year 7学生建立扎实的物理答题技巧。通过了解考官的期望以及分数是如何给出的，你可以把知识转化为更高的分数。我们将涵盖关键的题型、评分标准的语言，以及在考试当天能够带来不同结果的答题习惯。
1. Understanding the Command Words | 理解题目指令词
Edexcel physics questions use specific command words that tell you exactly what to do. Misreading a command word is one of the easiest ways to lose marks. The table below explains the most common ones you will see in Year 7 tests.
Edexcel物理题会使用特定的指令词，这些词明确告诉你需要做什么。误解指令词是最容易丢分的方式之一。下表解释了你会在Year 7测试中见到的最常见的指令词。
| State – Give a short, factual answer. No explanation needed. | 陈述 – 给出简短、事实性的答案。无需解释。 |
| Describe – Say what happens or what something looks like. Do not explain why. | 描述 – 说出发生了什么或某物是什么样子。不要解释原因。 |
| Explain – Give scientific reasons. Use words like ‘because’. | 解释 – 给出科学原因。使用 “因为” 等词。 |
| Calculate – Work out a numerical answer. Always show your working. | 计算 – 求出数字答案。一定要展示解题步骤。 |
| Compare – Point out similarities and differences. Use comparative phrases like ‘higher than’. | 比较 – 指出相似点和不同点。使用 “比…高” 等比较性的短语。 |
| Suggest – Apply your science knowledge to a new situation. There may be more than one correct answer. | 建议 – 把科学知识应用到一个新情境中。可能有不止一个正确答案。 |
Before you write, underline the command word. This small habit stops you from writing a description when an explanation is required, which costs marks.
动笔之前，在指令词下面画线。这个小小的习惯能避免你在需要解释时却写了描述，从而被扣分。
2. Reading the Question Carefully | 仔细阅读题目
Many mistakes come from answering the question you thought you saw rather than the one actually printed. Read the entire question twice. Circle key scientific terms and the number of marks available — the marks often tell you how many points to make.
许多错误源于你回答的是自己以为看到的题目，而不是实际印出来的题目。把整个题目读两遍。圈出关键科学术语和题目所给的分数——分数往往提示你需要写几个要点。
If a question says ‘Use the diagram’, you must refer to the diagram in your answer. If it says ‘Give two ways’, do not write three — you will not get extra credit, and you might waste time.
如果题目说 “利用图表”，你必须在答案中提及图表。如果题目说 “给出两种方式”，就不要写三种——你不会得到额外分数，还可能浪费时间。
Pay attention to bold or italic words in the question. They are highlighted for a reason, often pointing you toward the focus of the mark scheme.
注意题目中加粗或斜体的词语。它们被突出显示是有原因的，通常会指引你关注评分标准的重点。
3. Using Scientific Vocabulary | 使用科学词汇
Examiners reward precise scientific language. Instead of writing ‘the bulb lights up more’, write ‘the brightness of the bulb increases’. This shows you can use the correct terminology.
考官会奖励精确的科学语言。与其写 “灯泡更亮了”，不如写 “灯泡的亮度增加”。这能展示你会使用正确的术语。
In Year 7 physics, you are expected to know terms like ‘force’, ‘mass’, ‘weight’, ‘friction’, ‘air resistance’, ‘current’, ‘voltage’, ‘energy transfer’ and ‘density’. Using them where appropriate proves your understanding and often unlocks marking points.
在Year 7物理中，你应该知道 “力”、”质量”、”重量”、”摩擦力”、”空气阻力”、”电流”、”电压”、”能量转移” 和 “密度” 等术语。在合适的地方使用它们可以证明你的理解，而且常常能拿到得分点。
Spelling these words correctly matters, but in physics marks are rarely deducted for spelling mistakes as long as the meaning is clear. Still, try to learn the spellings as you go along.
正确拼写这些词很重要，但在物理考试中很少因为拼写错误扣分，只要能表达清楚意思就好。不过，还是要努力在平时的学习中记住拼写。
4. Units and Conversions | 单位和换算
Every numerical answer in physics must include a correct unit. Forgetting the unit can lose you the final answer mark even if the number is perfect. For example, writing ‘5’ instead of ‘5 N’ or ‘5 m/s’ is a common error.
物理中每一个数字答案都必须包含正确的单位。忘记写单位可能会导致你丢掉最后一个答案分，即使数字完全正确。例如，写 “5” 而不是 “5 N” 或 “5 m/s” 是一个常见错误。
Year 7 students need to be confident with the SI units for length (metre, m), mass (kilogram, kg), time (second, s), force (newton, N), energy (joule, J) and speed (metres per second, m/s). You also use degrees Celsius (°C) for temperature.
Year 7学生需要熟练掌握国际单位制中长度（米，m）、质量（千克，kg）、时间（秒，s）、力（牛顿，N）、能量（焦耳，J）和速度（米每秒，m/s）的单位。温度使用摄氏度（°C）。
Conversions often appear in questions. You must confidently change between grams and kilograms (1 kg = 1000 g), centimetres and metres (1 m = 100 cm), and millilitres and litres (1 L = 1000 mL). Practise multiplying or dividing by 1000 before the exam.
换算常常出现在试题中。你必须能熟练地在克和千克（1 kg = 1000 g）、厘米和米（1 m = 100 cm）、毫升和升（1 L = 1000 mL）之间转换。考试前练习一下乘以或除以1000。
When you calculate a quantity, always check that the units match. If distance is in cm and time in seconds, your speed should be in cm/s, unless the question asks for m/s and you must convert first.
当你计算一个物理量时，始终要检查单位是否匹配。如果距离用厘米、时间用秒，你的速度单位就应该是 cm/s，除非题目要求用 m/s，你必须先进行换算。
5. Calculations and Showing Working | 计算与展示解题步骤
Physics calculations are not just about the final number — the working out is where most marks hide. Even if your final answer is wrong, you can still earn marks for writing the correct formula, substituting the right numbers and showing the steps.
物理计算不仅仅是得出最终数字——解题过程中隐藏着大部分分数。即使最终答案错了，你仍然可以通过写出正确公式、代入正确数字和展示步骤来得分。
Take a typical question: A car travels 150 metres in 5 seconds. Calculate its speed. The perfect answer looks like this:
拿一道典型题目来说：一輛车在5秒内行驶了150米。计算它的速度。完美的答案长这样：
speed = distance ÷ time
speed = 150 ÷ 5
speed = 30 m/s
Always begin with the equation in words or symbols. Then substitute the values. Finally, write the answer with the correct unit to lock in all available marks.
始终先用文字或符号写出公式。然后代入数值。最后写出带正确单位的答案，以锁定所有可得分数。
When a formula is given, use it exactly as shown. For density questions, you may see ρ = m ÷ V. Write it down before plugging in numbers. This proves to the examiner that you know the relationship.
当题目给出了公式，就严格按照它来使用。对于密度题，你可能会看到 ρ = m ÷ V。在代入数字前先把它写下来。这向考官证明你理解这个关系。
6. Graph Skills | 图表技能
Graph questions test your ability to plot data and read information accurately. To gain full marks, use a sharp pencil for plotting, draw small neat crosses (×) and check the scale before you begin.
图表题测试你精确绘制数据和读取信息的能力。要拿满分，绘图时使用削尖的铅笔，画小巧整齐的叉号（×），并在开始前检查坐标轴的刻度。
If you are asked to draw a line of best fit, decide whether it should be a straight line or a smooth curve. Do not join dot to dot unless the question specifically instructs you to do so.
如果要求你画出最佳拟合线，先判断它应该是一条直线还是一条平滑曲线。除非题目明确指示，否则不要一个一个点连起来。
When reading a value from a graph, show how you did it by drawing dashed lines onto the axes. This is treated as working and can earn marks even if you misread the number slightly.
从图表上读取数值时，通过向坐标轴画虚线来展示你的方法。这被视为解题过程，即便你读出的数字略有偏差，也可能拿到分数。
Label axes with the quantity and unit, for example ‘Time (s)’ and ‘Distance (m)’. A graph without labelled axes will never reach the top band of the mark scheme.
给坐标轴标上物理量和单位，例如 “时间（s）” 和 “距离（m）”。没有标注轴的图表永远不会达到评分标准的最高档。
7. Diagrams and Labelling | 作图和标注
When you are asked to draw a circuit diagram or a simple force diagram, neatness and accuracy count. Use a ruler for straight lines and draw standard circuit symbols, like a circle with a cross for a bulb or a zigzag line for a resistor.
当你被要求画出电路图或简单的力的示意图时，整洁和准确很重要。画直线要用直尺，并使用标准电路符号，比如灯泡画一个圆圈内带一个叉，电阻器画一条锯齿线。
If the question asks you to label a diagram, put the label lines pointing directly to the part, and write the name clearly. In a diagram of a lever, for example, you might need to label the pivot, effort and load.
如果题目要求你在图上标注，让标线直接指向相应的部位，并清晰地写出名称。例如在杠杆图的示意图中，你可能需要标出支点、施力点和负载点。
Drawing forces: arrows must point in the correct direction, and their lengths should roughly represent the size of the force. Label each arrow with the type of force, such as ‘weight’ or ‘friction’.
画力的时候：箭头必须指向正确的方向，长度应该大致表示力的大小。给每个箭头标上力的类型，例如 “重力” 或 “摩擦力”。
8. Experimental Design Questions | 实验设计题
Many Year 7 Edexcel tests include a question about planning an investigation. You must be able to identify the independent variable (the one you change), the dependent variable (the one you measure) and the control variables (everything you keep the same).
许多 Year 7 Edexcel 的测试都包含一道关于设计调查实验的题目。你必须能辨识出自变量（你改变的量）、因变量（你测量的量）和控制变量（你保持不变的量）。
To plan a fair test, state clearly: ‘I will change…’, ‘I will measure…’ and ‘I will keep… the same’. Providing at least two control variables shows you understand the importance of a fair comparison.
要设计一个公平测试，清楚地写出：”我将改变……”，”我将测量……”，以及 “我将保持……不变”。提供至少两个控制变量，表明你理解公平比较的重要性。
Always mention safety in your plan if the experiment involves heating, heavy weights or sharp objects. A simple phrase like ‘wear safety goggles’ can earn a mark when the mark scheme asks for a relevant safety precaution.
如果你的实验涉及加热、重物或尖锐物体，一定要在计划中提及安全。像 “佩戴安全护目镜” 这样简单的一句话，当评分标准要求相关的安全预防措施时，就能拿到分数。
When describing results, use sentence starters like ‘As the (independent variable) increases, the (dependent variable)…’ This structure is exactly what markers look for in an evaluation.
描述结果时，使用 “随着（自变量）增大，（因变量）……” 这样的句式开头。这种结构正是阅卷人在评估中寻找的。
9. Explaining with ‘How’ and ‘Why’ | 用 “如何” 和 “为什么” 进行解释
Explanation questions carry a lot of marks and require a step-by-step chain of reasoning. A common mistake is to jump straight to the conclusion without showing the scientific steps in between.
解释题分值很高，需要一步一步的推理链条。一个常见的错误是直接跳到结论，而没有展示中间的科学步骤。
Take a question about a parachute: ‘Explain why a larger parachute opens more slowly.’ A strong answer might begin with ‘A larger parachute has a greater surface area. This increases air resistance. The increased air resistance opposes the weight more, so the resultant force is lower and the acceleration is smaller.’
以一道关于降落伞的题目为例：”解释为什么更大的降落伞张开得更慢。” 一个有力的答案可以从 “更大的降落伞有更大的表面积，这就增大了空气阻力。增大的空气阻力更多地对冲了重力，所以合力更小，加速度也更小” 开始。
Link each idea with connecting words like ‘so’, ‘therefore’, ‘this leads to’ and ‘because’. These words build a logical flow that matches the mark scheme’s progression of points.
用 “因此”、”所以”、”这导致” 和 “因为” 这样的连接词把每个观点串起来。这些词能建立起逻辑流，以匹配评分标准中对答题要点的递进要求。
10. Mark Schemes and What Examiners Look For | 评分标准和考官关注点
In Edexcel physics, marks are often broken into categories. For a calculation, you might see marks labelled with ‘M’ for method marks and ‘A’ for accuracy marks. Understanding this helps you to keep going even if you get stuck.
在 Edexcel 物理中，分数常被分为不同类别。对于计算题，你可能会看到标注为 “M” 的方法分和标注为 “A” 的精度分。理解这一点，能帮助你在遇到困难时也能坚持做下去。
A method mark (M1) is earned by writing the correct formula or by showing a valid step. An accuracy mark (A1) is typically for the correct answer with the correct unit. You can lose the A1 but still get the M1 — so never leave a calculation blank.
方法分（M1）是通过写出正确的公式或展示一个有效步骤来获得的。精度分（A1）通常给到正确答案且带正确单位。你可能丢掉 A1 分，但仍能拿到 M1 分——所以永远不要把计算题空着。
For written explanation questions, examiners use a ‘points-based’ or ‘levels-based’ mark scheme. This means you need to include a certain number of correct scientific ideas. Repeating the same idea in different words will not get you more marks.
对于文字解释题，考官会使用 “要点为基” 或 “等级为基” 的评分方案。这意味着你需要包含一定数量的正确科学观点。用不同的词语重复同一个观点，不会给你带来更多分数。
Key marking points often include: using correct terminology, linking cause and effect, referring to data or a diagram, and ending with a clear concluding statement that answers the question.
关键的得分点通常包括：使用正确的术语，将因果联系起来，引用数据或图表，以及以一个清晰的、能回答该问题的结论性陈述收尾。
11. Time Management | 时间管理
Before you begin, scan the paper and note how many marks each question is worth. Spend roughly one minute per mark. If a question has 3 marks, you should spend about 3 minutes on it.
开考之前，先浏览试卷，记下每道题的分值。大致按照一分钟每分的节奏来分配时间。如果一道题有3分，你应该花大约3分钟在上面。
Do not linger on a single difficult question. If you are stuck, put a light star next to it, move on, and return at the end if you have time. Often, ideas will come to you while you answer other questions.
不要在一道难题上耗太久。如果被卡住了，在旁边轻轻画个星号，接着往下做，在最后有时间时再回头来想。往往在你回答其他题目的过程中，会突然有想法。
At the end, reserve five minutes to check units and to reread any ‘explain’ questions. It is much easier to spot missing units or incomplete reasoning with fresh eyes.
在交卷的最后，留出五分钟时间检查单位，并重读所有的 “解释” 题。用清醒的双眼很容易发现缺失的单位或不完整的推理。
12. Checking Your Answers | 检查答案
Check your paper systematically. First, confirm you have answered every part of every question. Leaving a blank box guarantees zero marks, while a sensible guess might earn credit.
系统性地检查你的试卷。首先，确认你回答了每道题的每一小问。把空留在那里肯定得零分，而一个合理的猜测可能得分。
For calculations, reverse-check if possible: use your answer to recalculate a given value. If you calculated speed as 12 m/s and the distance was 24 m, check that 24 ÷ 12 gives the time in the question.
对于计算题，如果可能的话，进行反向检验：用你的答案去反算一个已知量。如果你算出速度为 12 m/s，而距离是 24 m，那就检查 24 ÷ 12 是否等于题目中的时间。
Read your explanations aloud in your head. Do they make a clear science point each time? If a sentence does not add new information, consider shortening it to keep your answer tight and mark-friendly.
在心里默读你的解释。它们是否每一次都提出了一个清晰的科学观点？如果某个句子没有增加新的信息，那就考虑把它缩短，让你的答案保持紧凑且容易得分。
Finally, tick off each command word you underlined at the start. You will feel confident knowing you have met exactly what was asked.
最后，标记出你在开头下画线的每一个指令词。当你知道自己确切满足了题目要求时，你会感到信心十足。
Published by TutorHao | Physics Revision Series | aleveler.com
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