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[]
[]
[]
["声现象","声的认识","声音的产生",49]
[null,null,"声音的传播","32,49,59"]
[null,"声音的特性","音调","1,49"]
[null,null,"响度",49]
[null,null,"音色与波形图",49]
["光现象","光的反射","反射现象（含作图）","63,64"]
[null,null,"平面镜成像（含作图）","50,64"]
[null,"光的折射","折射现象（含作图）","63,65"]
[null,null,"凸透镜成像（含作图）","51,66,74"]
["机械运动","长度与时间测量","刻度尺的使用","1,2,33,73"]
[null,null,"机械停表的使用","1,3"]
[null,null,"误差与错误","4,72"]
[null,"运动的快慢","机械运动概念",5]
[null,null,"运动的快慢","1,5,21,32,35"]
["热现象","物态变化","温度及温度计","1,52,73"]
[null,null,"物态及物态变化","17,53"]
[null,"内能","内能的认识","1,18,19,31,70"]
[null,null,"内能的利用","1,20,54"]
["电学","电学基础","电荷",42]
[null,null,"电流",43]
[null,null,"电路",43]
[null,"电流强度、电压和电阻","电流强度I","1,44,71"]
[null,null,"电压U","1,45,71,72"]
[null,null,"电阻R","1,46,71,72"]
[null,null,"欧姆定律","47,55,71"]
[null,"电学中的功和能","电功和电能","1,48,56,58"]
[null,null,"电功率","1,48,57,71"]
["力学","力学基础","质量密度","1,6,22,32,34,35,69"]
[null,null,"力学概念","1,7,14,15,67"]
[null,null,"弹力","9,10,60,67"]
[null,null,"重力","8,25,26,34,67"]
[null,"力和运动","牛顿第一定律与平衡","11,12,13,34"]
[null,null,"摩擦力","13,35,67"]
[null,"压强","固体压强","1,14,15,23"]
[null,null,"液体压强","15,24,26"]
[null,null,"气体压强",15]
[null,"浮力","产生原因",16]
[null,null,"三要素","16,26,34,36"]
[null,null,"浮沉条件",34]
[null,"功和能","功和功率","1,27,28,38"]
[null,null,"机械能","19,35,37,38,61,62"]
[null,"简单机械","杠杆","29,39,68"]
[null,null,"滑轮和滑轮组",40]
[null,null,"机械效率","1,30,41"]