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【免费下载】精编天津市第二新华中学20202021学年九年级10月月考物理试题

  • 2026-02-04 09:13:36
【免费下载】精编天津市第二新华中学20202021学年九年级10月月考物理试题

学年度第一学期初三物理月监测(一)

【常用量:g = 1

0 N/kg,ρ汽油 = 0.71×103 kg/m3,C = 0.88×103 J/kg·℃),C = 0.39×103 J/kg·℃),q汽油 =4.6×107

J/kg,q烟煤 = 3×107 J/kg

一、单项选择题(每小题3分,共30分)注意:请将答案填写在答题纸上

1. 下列现象表明分子做无规则运动的是(  )

A. 灰尘四起

B. 花香满园

C. 雪花飘飘

D. 黄沙扑面

2. 关于比热容,下列说法中正确的是(  )

A. 比热容跟物体吸收或放出的热量有关

B. 物体的质量越大,它的比热容越大

C. 物体的温度越高,它的比热容越大

D. 比热容是物质自身的性质,与质量、吸收或放出的热量无关

3. 已知铝的比热容大于铜的比热容。质量相等的铝和铜,吸收了相同的热量,下列说法中正确的是(  )

A. 铜上升的温度较高B. 铝上升的温度较高

C. 铜和铝上升的温度相同D. 条件不足,无法确定

4. 下列有关能量变化的说法,正确的是

A. 物体从斜面上匀速滑下,其机械能增大

B. 物体从斜面上匀速滑下,其机械能不变

C. 汽油机压缩冲程是将内能转化为机械能

D. 汽油机做功冲程是将内能转化为机械能

5. 如图所示是内燃机工作循环中的一个冲程,它是

A. 压缩冲程,将化学能转化成内能

B. 压缩冲程,将机械能转化成内能

C. 做功冲程,将内能转化成机械能

D. 做功冲程,将机械能转化成内能

6. 关于热机效率,下列说法正确的是

A. 热机做的有用功越多,效率就一定越高

B. 热机的功率越大,效率一定越高

C. 热机消耗的燃料越多,效率就一定越低

D. 以上说法都不对

7. 现有甲乙丙三个轻质小球,已知甲带负电,甲和乙互相吸引,乙和丙相互排斥,则

A. 乙一定不带电,丙带正电

B. 乙可能不带电,丙带负电

C. 乙一定带正电,丙带正电

D. 乙可能带正电,丙不带电

8. 下列关于导体和绝缘体的说法中错误的是(

A. 容易导电的物体叫导体,不容易导电的物体叫绝缘体

B. 金属能导电的原因是因为金属里面有自由的电子

C. 绝缘体也能带电

D. 绝缘体不能导电的原因是因为绝缘体内没有电子

9. 下列电路图中标出的电流方向正确的是(  )

A. B. 

C. D. 

10. 某保密室有三道门,关上一道门相当于闭合一个开关.只要有一道门没有关上,红色和绿色的指示灯都会发光.当三道门都关上时,红灯会熄灭,只有绿红灯会发光.则如图中的电路符号要求的是

A. B. C. D. 

二、不定项选择题(每小题3分,共9分。每小题给出的四个选项中,有一个或几个符合题意,全部选对得3分,选对但不全的得1分,不选或选错的得0分)注意:请将答案填写在答题纸上

11. 如图所示,为了解白纸和黑纸的吸热性能,小明将质量都是1kg、初温相同的水分别倒入两个完全相同的瓶中,再用大小、形状和厚薄相同的白纸和黑纸将瓶包起来,然后将两个瓶子放在太阳光下.在30min内,小明每隔3min测一次水的温度,记录在下面的表格中.根据小明的实验和记录可知[水的比热容c=4.2×103J/(kg•℃)] 

日照时间t/min

0

3

6

9

12

15

18

21

24

27

30

白纸瓶水温t1/℃

23

24

25

25

26

27

27

28

29

29

30

黑纸瓶水温t2/℃

23

25

26

27

28

29

30

31

32

33

34

A. 白纸的吸热性能好于黑纸

B. 黑纸吸热性能好于白纸

C. 30min内,白纸瓶中的水内能增加了1.26×105J

D. 30min内,黑纸瓶中的水内能增加了4.62×104J

12. 下列对能量转化的描述不正确的是

A. 蓄电池充电:电能——化学能

B. 发电机工作:电能——机械能

C. 萤火虫发光:生物质能——光能

D. 内燃机工作:化学能——内能——机械能

13. 下列说法正确是(  )

A. 100℃的水比50℃的水所含的热量多

B. 温度升高得多的物体吸收的热量不一定多

C. 热传递时高温物体将温度传给低温物体

D. 热传递时高温物体将热量传给低温物体

三、填空题(每小题4分,共24分)注意:请将答案填写在答题纸上

14. 图(甲)所示的实验现象说明分子间存在_____,图(乙)所示的实验现象说明_____越高,分子热运动越剧烈。

15. 生活中 “热”含义非常丰富,物理学中,“天气很热”中的“热”指____高;“两手相互摩擦手会发热”的“热”指______增加.

16. 一位同学用相同酒精灯给质量相等的甲、乙两种物质加热时,根据结果描绘温度—时间图像如图所

通过网盘分享的文件:【免费下载】精编天津市第二新华中学20202021学年九年级10月月考物理试题

链接: https://pan.baidu.com/s/1rMHk_BbjMTmkHi_T86h3uw?pwd=4321 提取码: 4321 

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  1. CONNECT:[ UseTime:0.001161s ] mysql:host=127.0.0.1;port=3306;dbname=no_yeyulingfeng;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001708s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.078680s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002143s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001692s ]
  6. SELECT * FROM `set` [ RunTime:0.024415s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.002077s ]
  8. SELECT * FROM `article` WHERE `id` = 466225 LIMIT 1 [ RunTime:0.002130s ]
  9. UPDATE `article` SET `lasttime` = 1770176185 WHERE `id` = 466225 [ RunTime:0.026066s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.004800s ]
  11. SELECT * FROM `article` WHERE `id` < 466225 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001511s ]
  12. SELECT * FROM `article` WHERE `id` > 466225 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001014s ]
  13. SELECT * FROM `article` WHERE `id` < 466225 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002451s ]
  14. SELECT * FROM `article` WHERE `id` < 466225 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.011017s ]
  15. SELECT * FROM `article` WHERE `id` < 466225 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004714s ]
0.342268s