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1、2019 年四川省巴中市中考物理试卷一、单项选择题（每小题2 分，共 60 分）.1下列描述与生活实际相符的是（）A一名中学生的正常身高约为800mm B小明百米短跑的平均速度约为15m/s C人体正常体温约为42D我国家庭电路的正常工作电压是220V 2下列关于声现象说法正确的是（）A“闻其声知其人”主要是根据声音的音调来判断的火B声音在空气中的传播速度比在固体中快C汽车安装的倒车雷达是利用次声波来工作的D学校附近禁止鸣笛是在声源处减弱噪声的3下列关于光现象说法错误的是（）A树荫下太阳的光斑是光沿直线传播形成的B湖面上楼房的倒影是光折射形成的C色光中的三原色是红、绿、蓝D照相机是利用凸透镜成
2、倒立、缩小的实像原理工作的4风景优美的光雾山，夏天云雾缭绕，冬天大雪纷飞，宛若人间仙境，其中关于雾、雪成因说法正确的是（）A液化、凝华B汽化、凝华C汽化、凝固D液化、凝固5下列关于温度、内能、热量说法正确的是（）A物体温度越低，含有的热量越少B做功和热传递都可以改变物体内能C物体内能增加，温度一定升高D物体机械能越大，内能越大6下列关于内燃机说法正确的是（）A柴油机吸气冲程吸人的是柴油和空气的混合物B汽油机气制顶部有喷油嘴C做功冲程中内能转化为机械能D内燃机功率越大，效率越高7下列关于能源说法正确的是（）A太阳能是清洁能源B核能是可再生能源C煤是新型能源D电能是一次能源8下列关于电磁波和信息技
3、术说法正确的是（）A由华为主导的5G技术不是利用电磁波进行信息传输的B北斗卫星导航系统是通过电磁波进行定位服务的C电磁波只能传递信息不能传递能量D不同频率的电磁波在真空中传播速度不相同9下列关于力的说法正确的是（）A空中自由下落的小球速度越来越快，小球的惯性力越来越大B踢足球时脚对足球的力和足球对脚的力是一对平衡力C力的大小、方向和作用点都可能影响力的作用效果D物体的重心一定在物体上10下列关于压强描述正确的是（）A大气压强随海拔高度升高而增大B铁轨铺在枕木上是为了增大压强C液体压强不仅与液体密度、深度有关，还与液体重力有关D流体在流速大的地方压强小，流速小的地方压强大11如图所示，物体从斜面
4、顶端匀速滑到斜面底端，在此过程中，下列说法正确的是（）A物体动能增大，机械能不变B物体动能不变，机械能减小C物体重力势能不变，机械能不变D物体重力势能减小，机械能增大12在粗糙程度相同的水平面上，重为 10N的物体在F5N的水平拉力作用下，沿水平面由A点匀速运动到B点，此时撤去拉力，物体继续向前运动到C点停下来，此过程中下列说文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M1
5、0J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T
6、1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W
7、9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M
8、6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10
9、P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2
10、X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码
11、:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3法正确的是（）A物体在AB段摩擦力等于10N B物体在AB段摩擦力小于5N C物体在BC段摩擦力等于5N D物体在AB段摩擦力大于BC段摩擦力13下列说法错误的是（）A电荷的定向移动形成电流B串联电路中电流处处相等C灯泡亮度由灯泡的实际功率决定D导体的电阻跟导体两端电压成正比14小明设计了一个电路，开关断开两灯都不亮，开关闭合两灯均发光，拧下其中一只灯泡，另一只灯泡仍发光，则符合要求的电路是（）ABCD15如图所示电路中，电源电压保持不
12、变，闭合开关S电路正常工作，一段时间后，发现两个电表示数都变大，则出现这种故障的原因可能是（）A L1断路B L1短路CL2断路DL2短路16如图所示电路中，电源电压保持不变，闭合开关S，滑动变阻器滑片向左移动时，下列判断正确的是（）文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6
13、T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1
14、W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5
15、M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB1
16、0P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G
17、2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编
18、码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M
19、10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3A电路总功率变小B电压表示数变大C电压表与电流表示数的比值不变D电流表示数变大17将一实心圆柱体悬挂于弹簧测力计下，物体下表面刚好与水面接触，从此处匀速下放物体，直至浸没（物体未与容器底接触）的过程中，弹簧测力计示数F 与物体下表面浸人水中深度h 的关系如图所示，则下列说法正确的是（）A物体重力为40N B物体浸没时受到的浮力为15N C物体的密度为2.5 103kg/m3D物体刚好浸没时下表面受到的液体压强为800Pa 18如甲图所示的电路中，电源电压为8V 恒定不变，R0为定值电阻，R 为滑动变阻器，闭合开关 S 后，在滑片
20、P 滑动过程中，电压表与电流表示数的变化关系如图乙所示，根据图象信息可知，下列判断错误的是（）A R0的阻值是 5文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB1
21、0P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G
22、2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编
23、码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M
24、10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6
25、T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1
26、W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3B电路的最大总功率12.8W C R0的最小功率是1.
27、6W D滑动变阻器最大阻值是35二、填空题19（3 分）家庭电路中量度电能多少的仪器是；发电机是根据原理工作的；改变电磁铁磁性强弱，可通过改变线圈匝数和大小的方式实现。20（3 分）小明站在竖直放置的平面镜前5 米处，当他正对平面镜以1m/s 的速度靠近平面镜时，以镜中的像为参照物，小明是（选填“运动”或“静止”）的，他在镜中像的大小（选填“变大”、“变小”或“不变”），2s 后小明到平面镜中像的距离是m。21涮火锅是巴中人最喜爱的美食之一，走近美食街远远地就能闻到火锅的香味，这是由于分子在永不停息地做，涮火锅时是通过方式改变食物内能的。22为 了减少大气污染，可对秸秆进行回收加工制成精秆煤，
28、完全燃烧2kg 秸秆煤可放出J 热量；若这些热量完全被水吸收，可使kg 水温度由20升高到 60 已知 q秸秆煤2.1 107J/kg，c水4.2 103J/（kg?）。23巴中市中学生足球比赛中，守门员用头将足球顶出球门后，足球继续向前运动，这是由于足球具有，同时也说明力可以改变物体的。24（3 分）如图所示的电路中，要使R1、R2串联，应闭合的开关是；要使 R1、R2并联，应闭合的开关是，（选填“S1”、“S2”、“S3”）；该电路中干电池供电时将能转化为电能。25（3 分）两个完全相同容器内分别盛满不同的液体，现将两个完全相同的小球轻轻放入容器中，小球静止后的状态如图所示，则液体对容器底
29、部的压强关系是p甲p乙；两小球所受的浮力关系是F甲F乙（选填“”、“”或“”）。文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4
30、M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O
31、6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR
32、1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U
33、5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB
34、10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5
35、G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X326（3 分）如图所示的电路中，L1标有“6V 3W，L2标有“3V 3W”，闭合开关后
36、，两灯均发光，此时电路的总电阻R总，两电压表示数之比U1：U2；若将两灯并联后接入3V电路中，则两灯的实际功率之比P1：P2。（不计温度对灯丝电阻的影响）三、作图、实验探究题（27、28 题每图 2 分，其余每空1 分，共 20 分）27请将光路图补充完整。28根据图所示的通电螺线管，标出磁感线方向和小磁针北极。29（4 分）为了比较A、B两种液体的吸热能力，小明同学设计了以下实验步骤：a在两个同样的烧杯中分别装入等体积的A、B两种液体；b用温度计分别测量A、B两种液体的初温，温度计示数相同；c用两个相同的酒精灯同时给两个烧杯加热，且加热时间相同；d用温度计分别测出A、B两液体的末温。请完成下
37、列问题：（1）此实验的主要探究方法；文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6
38、ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4
39、K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3
40、文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:C
41、S4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J
42、1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1
43、HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3（2）在上述实验步骤中，存在错误的是（选填步骤前的字母），更正错误后继续实验；（3）步骤 c 中“加热时间相同”是为了使A、B两种液
44、体；（4）如图所示是A、B 两种液体温度随时间变化关系的图象，则两液体的比热容关系是cAcB（选填“”、“”或“”）。30（5 分）小明同学用如图所示的装置探究“力与运动的关系”。让小车从斜面同一高度处由静止滑下，分别标记出小车在水平面的毛巾、棉布、木板表面的停止位置。（1）小车在相同斜面同一高度由静止滑下，是为了使小车到达水平面时的相同；（2）标记 a 是小车在（选填“毛巾”、“棉布”、“木板”）表面停下来的位置，分析可知，水平表面越光滑，小车受到的阻力越小，速度减小得越（选填“快”、“慢”）；（3）在此实验基础上通过推理可知观点（选填“A”或“B”）是正确的；A物体的运动不需要力来维持B力
45、是维持物体运动的原因（4）在此实验的基础上进行改进，让同一小车从斜面不同高度处由静止滑下，观察小车在相同水平面滑行的距离，可以探究小车的重力势能与有关。31（6分）同 学 们 想 探 究“导 体 中 电 流 跟 导 体 两 端 电 压 的 关 系”。（1）小明同学通过学习知道了是形成电流的原因，因此做出了如下三种情想：A电流跟电压成反比文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:
46、CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10
47、J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1
48、 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9
49、Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6
50、 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P4K5G2X3文档编码:CS4M10J1O6T1 HR1W9Y5U5M6 ZB10P