Year 10 AQA Physics: Summer Bridging and Transition Course | Year 10 AQA 物理：暑期预习与衔接课程

📚 Year 10 AQA Physics: Summer Bridging and Transition Course | Year 10 AQA 物理：暑期预习与衔接课程

This bridging course is designed to help you transition smoothly into Year 10 AQA Physics. It reviews the essential concepts from Year 9 and introduces the core topics you will encounter, building a solid foundation of scientific knowledge and mathematical skills. Each section explains key ideas in both English and Chinese, so you can strengthen your understanding and exam readiness over the summer.

本衔接课程旨在帮助你顺利过渡到 Year 10 AQA 物理课程。它回顾九年级所学的重要概念，并介绍你将接触的核心主题，为科学知识和数学技能打下坚实基础。每个部分均用英文和中文解释关键概念，让你在暑期巩固理解，为考试做好准备。

1. Energy | 能量

Energy is stored in different ways: kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear, magnetic and electrostatic. A system is an object or group of objects, and we study how energy is transferred between them. The principle of conservation of energy states that energy can never be created or destroyed; it can only be transferred usefully, stored or dissipated (often as thermal energy).

能量以不同形式储存：动能、重力势能、弹性势能、热能、化学能、核能、磁能和静电。系统是一个或一组物体，我们研究能量如何在它们之间传递。能量守恒定律指出能量不能被创造或消灭；它只能被有效转移、储存或耗散（通常以热能形式耗散）。

Moving objects possess kinetic energy (E_k = ½ m v²), where m is mass and v is speed. Gravitational potential energy gained by an object depends on its mass, gravitational field strength g (≈ 9.8 N/kg on Earth) and change in height ∆h, as ∆E_p = m g ∆h.

运动物体具有动能（E_k = ½ m v²），其中 m 是质量，v 是速率。物体获得的重力势能取决于其质量、引力场强度 g（地球约为 9.8 N/kg）以及高度变化 ∆h，公式为 ∆E_p = m g ∆h。

Work done (W) is equal to the force (F) multiplied by the distance moved along the force (s): W = F s. Power (P) is the rate at which work is done or energy is transferred, P = E / t. Efficiency can be expressed as useful output energy transfer divided by total input energy transfer; it is always less than 1 (or 100%) due to dissipative forces.

做功 (W)

Published by TutorHao | Year 10 Physics Revision Series | aleveler.com

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