📚 Year 7 CIE Physics: Exam Techniques and Marking Criteria | Year 7 CIE 物理：答题技巧与评分标准
Success in Year 7 CIE Physics exams depends not only on knowing scientific facts but also on mastering exam techniques and understanding how marks are awarded. This guide will walk you through the essential skills to help you maximise your score.
在 Year 7 CIE 物理考试中取得好成绩，不仅取决于掌握科学事实，还取决于掌握答题技巧并理解评分标准。本指南将带你掌握关键技能，帮助你最大化得分。
1. Understanding Command Words | 理解指令词
Command words in exam questions tell you exactly what type of answer is required. Ignoring them can cost you marks even if you know the science.
考试题目中的指令词会明确告诉你要求给出哪种类型的答案。忽视指令词可能会让你失分，即使你懂科学知识。
Common command words include "state" (give a brief fact), "describe" (say what you observe or what happens), "explain" (give reasons using scientific ideas), "calculate" (work out a numerical answer), and "suggest" (apply your knowledge to a new situation).
常见的指令词包括 "state"（给出一个简短的事实）、"describe"（说出你观察到或发生的情况）、"explain"（用科学观点给出原因）、"calculate"（算出数值答案）和 "suggest"（将你的知识应用到新情境中）。
Always underline or circle the command word before you start writing so that you stay focused on the task.
在开始写作之前，总是划出或圈出指令词，这样你就能专注于任务。
2. Reading Each Question Carefully | 仔细阅读问题
Read every question at least twice before answering. Look out for small words such as "not" or "always" that can completely change the meaning.
在回答之前，至少把每个问题读两遍。注意诸如 "not" 或 "always" 这样的小词，它们可能会完全改变句子的意思。
Pay close attention to any diagrams, tables, or graphs that accompany the question. Often they contain valuable information that you must use in your answer.
密切注意题目所附的任何图表、表格或图形。它们通常包含你必须在答案中使用的宝贵信息。
If a question says "Use the information in the table" or "Refer to the diagram", make sure your answer actually uses that material; marks are often reserved for doing so.
如果题目说 "利用表格中的信息" 或 "参考图表"，请确保你的答案确实用到了这些材料；得分点往往对此有要求。
3. Showing Your Working Clearly | 展示解题步骤
In calculation questions, always write down the formula you are using, substitute the numbers, and then give the final answer. This is called showing your working.
在计算题中，始终写出你使用的公式，代入数字，然后给出最终答案。这叫做展示解题步骤。
Even if your final answer is incorrect, you can still earn marks for using the correct formula and for substituting the right values. Examiners award method marks for working.
即使你的最终答案不正确，你仍然可以因为使用正确的公式和代入正确数值而得分。考官会给解题步骤打出方法分。
distance ÷ time, then show the numbers and the unit, such as speed = 100 m ÷ 20 s = 5 m/s.
例如，要计算速度，写出：速度 = 距离 ÷ 时间，然后展示数字和单位，如 速度 = 100 m ÷ 20 s = 5 m/s。
4. Using Correct Units and Symbols | 使用正确单位与符号
In physics, every numerical answer must include the appropriate unit unless the unit is already given in the answer line. Forgetting the unit loses marks.
在物理中，每个数值答案都必须包含适当的单位，除非答题线上已经给出了单位。忘记写单位会丢分。
Common units for Year 7 include metres (m) or centimetres (cm) for length, kilograms (kg) or grams (g) for mass, seconds (s) for time, newtons (N) for force, and metres per second (m/s) for speed.
Year 7 常见单位有：长度用米 (m) 或厘米 (cm)，质量用千克 (kg) 或克 (g)，时间用秒 (s)，力用牛顿 (N)，速度用米每秒 (m/s)。
Use the correct symbol for units. For instance, m/s not mps, and N not n. Lowercase and uppercase letters matter: "kg" not "Kg".
使用正确的单位符号。例如，用 m/s 而不是 mps，用 N 而不是 n。大小写很重要："kg" 不能写成 "Kg"。
5. Drawing and Labelling Diagrams | 绘制与标记图表
When asked to draw a diagram, such as a circuit or a force arrow, always use a sharp pencil and a ruler. Freehand sketches are often not accepted for marks.
当被要求绘制图表时，比如电路图或力的箭头，始终用削尖的铅笔和直尺。徒手画的草图通常不被接受，无法得分。
Labelling is just as important as drawing. Every label line should touch the part it refers to, and labels should be written horizontally in clear handwriting.
标记和绘制同样重要。每条标记线应触及它所指的部分，标签要用清晰的笔迹水平书写。
If the question asks you to complete a circuit diagram, make sure symbols such as cells, bulbs, and switches are drawn correctly according to standard conventions.
如果题目要求你补全一个电路图，确保电池、灯泡、开关等符号按照标准惯例正确绘制。
6. Structuring Experiment Descriptions | 组织实验描述
When a question asks you to describe an investigation, think about what you will change (independent variable), what you will measure (dependent variable), and what you will keep the same (control variables).
当题目要求你描述一项探究时，想一想你要改变什么（自变量），你要测量什么（因变量），以及你要保持什么不变（控制变量）。
A good answer often starts with "Set up the equipment as shown..." and then describes steps in a logical order using words like "first", "then", "finally".
一个好的回答通常以 "如图所示搭设装置……" 开头，然后按逻辑顺序使用 "首先"、"然后"、"最后" 等词语来描述步骤。
Always state that you will repeat the readings and calculate a mean to make your results more reliable, unless the question says the experiment is a fair test comparison.
始终说明你将重复读数并计算平均值，以使结果更可靠，除非题目指出该实验是一次公平测试比较。
7. Handling Data and Calculations | 处理数据与计算
When reading data from a table, check the column headings to see the units, and note if values are given to one decimal place – you should match that in your own answer.
从表格中读取数据时，检查表头以查看单位，并注意数值是否保留一位小数——你自己的答案也应该与之匹配。
speed = distance ÷ time, you can get distance = speed × time and time = distance ÷ speed.
学会重新排列简单的公式。例如，从 速度 = 距离 ÷ 时间，你可以得到 距离 = 速度 × 时间 以及 时间 = 距离 ÷ 速度。
Use a calculator when allowed, but always double-check your arithmetic. Simple mistakes like missing a zero can change the whole answer.
允许时使用计算器，但始终检查你的计算。像漏掉一个零这样的简单错误可能会完全改变答案。
8. Answering 'Explain' Questions Effectively | 有效回答 "解释" 类问题
'Explain' questions ask you to use scientific ideas to say why or how something happens. You must include a scientific reason, not just a description.
"解释" 类问题要求你运用科学观点来说明某事为什么发生或如何发生。你必须包含科学原因，而不仅仅是描述。
Use linking words such as "because", "so", "this means that", or "therefore" to connect your observation with the scientific principle.
使用连接词，如 "because"、"so"、"this means that" 或 "therefore"，将你的观察与科学原理联系起来。
For example, instead of "The apple fell", write "The apple fell because gravity pulled it towards the centre of the Earth."
例如，不要写 "苹果落下来了"，而应该写 "苹果落下来是因为重力把它拉向地心。"
9. Analysing and Plotting Graphs | 分析与绘制图表
When plotting a graph, put the independent variable on the x-axis (horizontal) and the dependent variable on the y-axis (vertical). Label both axes with the quantity and unit.
绘制图表时，将自变量放在 x 轴（横轴）上，将因变量放在 y 轴（纵轴）上。为两条轴标上数量和单位。
Choose scales that make it easy to read the points and cover more than half the graph paper. Plot points with small, neat crosses, not dots.
选择便于读取数据点且能占据一半以上图纸的刻度。用整洁的小叉号描点，不要用圆点。
When describing a graph, state the overall trend: "As time increases, the temperature decreases steadily," and mention any anomalies that do not fit the pattern.
在描述图表时，说明总体趋势："随着时间的推移，温度稳步下降"，并提到任何不符合规律的异常点。
10. Avoiding Common Mistakes | 避免常见错误
One common mistake is confusing mass and weight. Mass is measured in kilograms and does not change, while weight is a force measured in newtons and depends on gravity.
一个常见错误是混淆质量和重量。质量以千克为单位且不会改变，而重量是以牛顿为单位的力，取决于重力。
Another frequent error is writing answers in the wrong place. Make sure you write your answer on the correct line or in the correct box.
另一个常犯的错误是把答案写错地方。确保你将答案写在正确的横线上或正确的方框里。
Rushing through multiple-choice questions often leads to careless slips. Read every option, eliminate the obviously wrong ones, and then choose the best answer.
匆忙做选择题常常导致粗心失误。阅读每一个选项，排除明显错误的答案，然后选出最合适的答案。
11. Marking Criteria for Short-Answer Questions | 简答题评分标准
Short-answer questions typically carry 1 or 2 marks. For a 1-mark question, a single correct fact is usually enough to earn the mark.
简答题通常占 1 或 2 分。对于 1 分题，通常一个正确的事实就足以拿到分数。
Examiners look for specific keywords. For example, "Name one force that opposes motion" – writing "friction" or "air resistance" scores the mark. Extra words are not penalised but are unnecessary.
考官会寻找特定的关键词。例如，"说出一种阻碍运动的力"——写 "摩擦力" 或 "空气阻力" 即可得分。多写的词不会扣分但也没有必要。
If a 2-mark question asks for two reasons, write two distinct points, each on a new line. The mark scheme awards one mark per valid point.
如果一道 2 分题要求给出两个理由，请写出两个不同的点，每个点另起一行。评分方案是按每个有效点给 1 分。
12. Marking Criteria for Extended-Response Questions | 拓展回答评分标准
Questions worth 3 or 4 marks require a series of linked steps. Marks are awarded for each correct step, so you can gain partial credit even without a perfectly complete answer.
占 3 或 4 分的问题需要一系列相互关联的步骤。每个正确步骤都会得分，因此即使答案不够完整，你也可以获得部分分数。
For example, an "Explain why a metal boat floats" question might award marks for mentioning density, displaced water, and the fact that the weight of water displaced equals the upward force.
例如，一道 "解释为什么金属船能浮起来" 的题目可能为以下几点给分：提到密度、排开的水量，以及排开水的重量等于向上的力的事实。
To score full marks, structure your answer logically: state the relevant science, apply it to the situation, and then draw a conclusion. Use scientific vocabulary wherever possible.
要拿到满分，要逻辑清晰地组织你的答案：陈述相关的科学原理，将其应用到情境中，然后得出结论。尽可能使用科学词汇。
Published by TutorHao | Physics Revision Series | aleveler.com
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