Year 7 Cambridge Physics: Unit Test Mock Paper Walkthrough | 剑桥七年级物理：单元测试模拟卷解析

📚 Year 7 Cambridge Physics: Unit Test Mock Paper Walkthrough | 剑桥七年级物理：单元测试模拟卷解析

This mock paper walkthrough is designed to guide Year 7 students through a typical Cambridge Physics unit test. By analysing common question types, you will improve your understanding of key concepts and boost your confidence for the real assessment.

本模拟卷解析旨在帮助七年级学生熟悉典型的剑桥物理单元测试。通过分析常见题型，你将加深对核心概念的理解，并为真实考试建立信心。

1. Overview of the Mock Paper | 模拟卷概览

The mock paper includes 10 questions that cover three main topic areas: Forces and Energy, Waves, and Electricity and Magnetism. Most questions require calculations, short written answers or diagram drawing.

模拟卷包含10道题目，涵盖三大主题领域：力与能量、波、以及电与磁。大多数题目要求计算、简答或画图。

You will have 45 minutes to complete the paper, which is worth 40 marks. Read each question carefully and always show your working to earn partial marks.

你将有45分钟完成试卷，满分为40分。仔细阅读每道题，并始终写出解题步骤以获得部分分数。

Below, we walk through each question, highlighting the correct approach, common pitfalls and the scientific reasoning behind the answers.

下面，我们将逐题分析，指出正确的解题方法、常见错误以及答案背后的科学原理。

2. Question 1: Speed Calculation | 速度计算

The first question asks you to calculate the average speed of a cyclist who travels 400 metres in 50 seconds.

第一题要求计算一名自行车手的平均速度，他50秒内骑行了400米。

speed = distance ÷ time

Substitute the values: speed = 400 m ÷ 50 s = 8 m/s. Always include the unit ‘m/s’ (metres per second).

代入数值：速度 = 400 米 ÷ 50 秒 = 8 米/秒。务必带上单位“米/秒”。

A common mistake is to swap distance and

Published by TutorHao | Year 7 Physics Revision Series | aleveler.com

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