2018年湖南省岳阳市中考物理试卷(含答案).pdf

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1、第1页共 31页2018 年湖南省岳阳市中考物理试卷一、选择题本大题共12 小题，每题 3 分，共 36 分在每题给出的四个选项中，只有个选项符合题意1 3 分以下数据符合实际的是A某中学生的身高为1.65m B某中学生跑 1000m 用时 4sC岳阳的年平均气温为36D我国家庭电路电压为380V2 3 分如下图的光现象中，由光的反射形成的是A手影B平面镜成像C筷子弯折D放大镜成像3 3 分以下有关声学知识说法正确的选项是A吉它发出的琴声来自弦的振动B声音只能在气体中传播C岳阳开展“禁炮”行动，是从传播过程中控制噪声D汽车的“倒车雷达”是利用了次声波测距4 3 分对以下生活现象解释正确的选项是

2、第2页共 31页A水坝下宽上窄液体压强随深度的增加而减小B伞被“吸”变形流速大的地方压强大C纸片“托”住满杯水水有粘性D木块漂浮漂浮时F浮=G物5 3 分如下图，在水平桌面上，用弹簧测力计拉着木块匀速前进，则A木块受到的重力与木块对桌面的压力是一对平衡力B水平桌面越粗糙，测力计的示数越大C木块相对弹簧测力计是运动的D测力计对木块施力，木块对测力计没有力的作用6 3 分2018 年 5 月 21 日，我国“鹊桥”号卫星由长征火箭成功发射升空，将搭建地月信息联通之桥。以下说法正确的选项是A火箭升空时没有惯性B卫星进入轨道后靠电磁波与地面联系C火箭加速上升，其动能保持不变D火箭发动机采用热值小的燃料

3、7 3 分端午节吃粽子是我国的传统习俗。对“煮粽子”的情景分析正确的选项是A粽子温度升高，是通过做功的方式来增大内能B锅边沿冒出的大量“白气”是水蒸气文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U

4、3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X

5、1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z

6、4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10

7、N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M

8、6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编

9、码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6文档编码:CE9C7Q7S1U3 HE3X1O4B5Z4 ZB10N10G5M6Y6第3页共 31页C

10、“粽叶飘香”说明分子在永不停息地做无规则运动D水温升高，水的比热容变大8 3 分关于能源和能量的说法正确的选项是A煤和石油都是不可再生能源B汽车可以从排放的尾气中吸收能量，不消耗新的能源，返回原地C达?芬奇设想的永动机是可以制成的D目前的核电站是利用核聚变来发电9 3 分设计一个病房呼叫电路，要求：按下病人床头开关，值班室的铃会响、对应病床的灯会亮，提醒护士哪位病人需要护理。以下电路设计最合理的是ABCD10 3 分能说明发电机工作原理的是ABCD11 3 分以下做法符合安全用电要求的是A用湿布清洁正在工作的灯具B发生触电，立即切断电源C三角插头最长的脚折弯后，插在两孔插座上使用D使用验电笔，

11、手不接触笔尾的金属体12 3 分如图，电源电压恒为 4.5V，?的量程为“0 0.6A”，?的量程为“0 3V“，文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编

12、码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T

13、8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编

14、码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T

15、8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编

16、码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T

17、8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3第4页共 31页灯泡上标有“2.5V 1.25W”不考虑灯丝电阻变化，滑动变阻器 R 的规格为“20 1A”。闭合开关，在保证电路安全的情况下，移动滑片P的过程中A?的示数最大为 0.6AB灯泡消耗的最小功率为0.12WC电路消耗的最大总功率为2

18、.7WD滑动变阻器接入电路的最小电阻为4二、填空题本大题共4 小题，每空 2 分，共 16 分13 4 分用不计绳重和摩擦的滑轮组把重为720N的货物匀速提高 10m，所做的总功为 12000J，此时滑轮组的机械效率为；用该滑轮组提升更重的物体，机械效率会选填“变小”、“不变”或“变大”。14 4 分如图，质地均匀的长方体重7N，放在水平桌面上，它与桌子的接触面积为 0.01m2，则它对桌面的压强为Pa：竖直切除该物体右边的阴影部分，剩余部分对桌面的压强会选填“变小”、“不变”或“变大”。15 4 分标有“6V 3W”的小灯泡，它的电流一电压图象如下图，则它正常工作10s 消耗的电能为J；假设

19、将它与一个10的定值电阻串联在电压为8V的电路中，则电路消耗的总功率为W。16 4 分在“走进西藏”活动中，小明对藏民用面积很大的凹面镜制成的太阳灶烧水如图甲很好奇。于是他用不锈钢汤勺的内外表当作凹面镜，将平行光正对“凹面镜”照射，光路如图乙。1使用太阳灶烧水时，水壶应放在图乙中的选填“a”、“b”或“c”点。文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8

20、O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码

21、:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8

22、O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码

23、:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8

24、O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码

25、:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3第5页共 31页2小明还观察到收集微弱电视信号的

26、“卫星锅”如图丙也有类似结构。你认为“卫星锅”凹形锅面应选用对电视信号有很强选填“反射”或“吸收”性能的材料。三、作图题本大题共2 小题，每题 3 分，共 6 分在答题卡上用铅笔作图，确定后用黑笔添黑17 3 分如下图，请画出入射光线经凸透镜后的折射光线。18 3 分请用力的示意图表示悬浮在水中的物体受到的浮力。四、实验探究题本大题共3 小题，每空 2 分，共 24 分19 6 分探究“沸腾的规律”实验中，每隔半分钟记录一次水的温度，实验数据如下表。时间33.544.555.56温度/929597989898981实验说明，水的沸点为；水在沸腾过程中，温度。2在标准大气压下，酒精的沸点为78.

27、5利用沸腾知识，要从甘蔗酒中别离出酒精，加热甘蔗酒时控制的适宜温度可为只填序号。A.60B.80C.100 文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:C

28、Z2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8

29、I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:C

30、Z2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8

31、I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:C

32、Z2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8

33、I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3第6页共 31页20 8 分用天平和量筒测某品牌牛奶的密度。1天平放在水平台上，将游码移到零刻度线处，指针位置如图甲，应向填“左”或“右”调节平衡螺母，直至横梁平衡；2往烧杯中倒入适量牛奶，测得烧杯和牛奶的总质量为106g；3将烧杯中部分牛奶倒入量筒，

34、如图乙。再测出烧杯和剩余牛奶的质量，如图丙；4算出牛奶的密度为g/cm3；5假设操作第 3步时，不慎将少量牛奶附着在量筒内壁上，测得的牛奶密度将会选填“偏小”、“不变”或“偏大”；6用两个相同的杯子分别装满水和牛奶，总质量较大的是装的杯子。水=1g/cm321 10 分用图甲电路探究“电流与电阻的关系”，电源电压恒为 3V，滑动变阻器规格为“50 2A”。1请用笔画线代替导线，将甲图中电压表连入电路，测R两端的电压2滑片 P 移至阻值最大处，将5电阻接入电路，闭合开关。移动滑片P 发现，电压表有示数，电流表始终无示数，其原因可能是只填序号AR短路BR断路C滑动变阻器短路3排除故障后，移动滑片P

35、 使电压表示数如图乙所示，记下电压表和电流表示数4 将 5电阻换成 10电阻，为保持电压表示数不变，滑片 P应向选填“A”或“B”端移动；5假设每次实验均选用单个定值电阻连入电路，实验室还有“15，20，30，文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G

36、3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U

37、9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G

38、3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U

39、9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G

40、3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U

41、9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3第7页共 31页35，50”5 个电阻，你认为能供继续本实验的电阻最多还有个6利用可选电阻继续实验，得到结论：电压一定时，导体中的电流与导体电阻成比五

42、、综合应用题本大题共2 小题，每题 9 分，共 18 分解答应写出必要的文字说明、公式和重要的演算步骤，只写出最后答案的不能得分22 9 分“沙场点兵，扬我军威”。2017 年 8 月 1 日，习近平总书记在朱日和军事基地乘坐检阅车对三军将士进行检阅。某检阅车质量为2400kg，在 600s内沿水平方向匀速前进了3000m，牵引力大小为2000N求1检阅车的重力2检阅车的速度3牵引力的功率23 9 分图甲是某款家用电熨斗。电路原理如图乙，R1、R2为发热体，R1的阻值为 110，通过 S1、S2实现温度控制。电源电压为电熨斗的额定电压220V，电熨斗消耗的最大功率为660W1只闭合 S1，求通

43、过 R1的电流；2只闭合 S2，求 R2在 60s内产生的热量；3为适应更多衣料，小明对电路作了改良如图丙。当电熨斗控制开关S1、S2处于原低温工作状态不变时，移动滑片P，相应发热体的功率可在原功率的25%100%之间变化。求滑动变阻器最大阻值至少为多少？文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7

44、L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7

45、W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7

46、L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7

47、W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7

48、L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7W1G3U8C3文档编码:CZ2I6R7L2U9 HX2T3T8O8I2 ZC7

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