📚 Year 10 WJEC Physics: High-Frequency Topics & Common Error Analysis | Year 10 WJEC 物理：高频考点与易错题分析
WJEC GCSE Physics for Year 10 builds a foundation in energy, forces, electricity, waves and radioactivity. Many students find certain topics repeatedly tested, yet small mistakes cost marks. This article highlights the high-frequency topics and common pitfalls, with bilingual explanations so you can learn both content and accurate physics vocabulary.
WJEC GCSE 物理在 Year 10 阶段奠定了能量、力、电学、波和放射性的基础。许多学生发现某些知识点反复出现，但小错误却导致失分。本文梳理高频考点与常见误区，提供双语解析，助你掌握内容与精准物理术语。
1. Energy Stores and Transfers | 能量储存与转移
Energy cannot be created or destroyed, only transferred between stores. You must identify the energy stores correctly: kinetic, gravitational potential, thermal, chemical, elastic potential, nuclear, electrostatic and magnetic. The pathway of transfer (mechanical working, electrical working, heating, radiation) must be linked to the stores.
能量不能创生也不能消灭，只能在不同储存之间转移。你必须正确识别能量储存：动能、重力势能、热能、化学能、弹性势能、核能、静电势能和磁能。转移途径（机械做功、电做功、加热、辐射）必须与储存相关联。
A common error is stating 'energy is lost' as heat or sound without specifying from which store. In WJEC, you must say, e.g., 'energy is transferred mechanically from the kinetic store of the car to the thermal store of the brakes and surroundings'. Also, when drawing Sankey diagrams, the width of arrows must be proportional to the amount of energy; many students draw inaccurate widths.
常见错误是说能量“损失”为热或声而不指明来自哪个储存。在 WJEC 考试中，你必须如：“能量通过机械做功从小车的动能储存转移到刹车和周围环境的热能储存。”此外，画桑基图时，箭头宽度必须与能量大小成比例，不少学生宽度画得不准确。
otal input energy transfer. Remember, efficiency can be a decimal or percentage; always check the question. The trick is that useful output is never greater than total input, so efficiency cannot exceed 1 (or 100%). Some students divide the wrong way.
效率计算：效率 = 有用输出能量转移 / 总输入能量转移。记住，效率可以是小数或百分数；注意审题。窍门是有用输出永远不会大于总输入，所以效率不可能超过1（或100%）。有些学生会除反。
2. Forces and Motion | 力与运动
tion, the area under the graph gives displacement (distance in a straight line). A common mistake is misreading the axes—if it' stance-time graph, the gradient gives speed, not velocity. Confusing these two graphs is a classic error.
速度-时间图是高频考点。梯度表示加速度，图线下的面积表示位移（直线上的距离）。常见错误
Published by TutorHao | Year 10 Physics Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
或截图后用「扫一扫 → 相册」选择本图