青岛五十九中2011-2012九年级上学期期中测试

青岛五十九中2011-2012九年级上学期期中测试
青岛五十九中2011-2012九年级上学期期中测试

物理试题 第1页 (共8页)

青岛第五十九中学2011-2012学年度第一学期 九 年 级 物理 (学科)阶段性质量反馈

(本试题满分:100分,考试时间:90分钟)

友情提示:亲爱的同学,欢迎你参加本次检测,祝你答题成功!

1.请务必在本试卷密封线内填写自己的学校、班级、姓名。

2.卷(I )的答案需要写在卷(I )试题后的表格内,卷(II )的答案需要写在本试卷上。

卷(Ⅰ) 现象·概念·结构·方法(本卷满分30分)

一、单项选择题(本题满分18分,共9个小题,每小题2分):下列各小题的四个选项中只有一个是正确的,请选出并填写在后面表格内

1.下列做法中,不正确的是

A.汽车保持车距行驶

B.做实验时,轻拿轻放玻璃仪器

C. 按照顺序排队下楼,不拥挤。

D. 公共汽车还未停稳,就下车。 2.假如我们到达宇宙太空,发现物体不受重力,则下列情况不能实现的是 A. 我们的质量变小了 B.用刻度尺测量我们的身高 C. 用弹簧测力计测拉力 D.轻而易举地举起某个同学 3.下列关于平衡力的说法正确的是

A.吊灯对天花板的拉力和吊灯受到的重力是一对平衡力

B.天花板对吊灯的拉力和吊灯受到的重力是一对平衡力

C.物体受三个力的作用一定不会平衡

D.平衡力就是作用力与反作用力

4.下列图像能正确反映重力与质量关系的是

5.下列关于力和运动的关系,叙述不正确的是( ) A.由于物体具有惯性,因此物体不受力也可以运动 B.行驶的汽车停下来,是因为受到了阻力的作用

座号

市(区)___________________ 学校___________________ 班级_______________ 姓名_________________ 考号__________________ 密 封 线

物理试题 第2页 (共8页)

C.匀速行驶在盘山公路上的汽车受到平衡力的作用

D.物体不受力时,可能处于静止状态,也可能处于匀速直线运动状态 6.在使用下列器材时,正确的做法是

A .刻度尺的零刻线磨损后,测量数值就不准确了。

B .使用天平称物体质量时,应调节平衡螺母使天平恢复平衡。

C .量筒读数时,应以水的凹液面为准。

D .使用弹簧秤测拉力时,拉力的方向必须竖直向下。

7.以下几个验证性小实验正确的是

A.跳水运动员用力压弯跳板,说明力可以改变物体的运动状态

B.玻璃杯掉到地上跌碎了,说明力可以改变物体的形状

C.用力沿水泥地面推箱子,箱子就动,不推就不动,说明物体运动需要力来维持。

D. 越用力拉弹簧,弹簧被拉得越长,说明力的作用点会影响力的作用效果。 8.甲乙两个物体的速度之比为2:3,运动路程之比为4:5,则所用时间之比是 A.3:5 B.4:5 C.10:3 D.6:5 9.下列科学方法属于“等价信息处理法”的是 A .将机械运动分为匀速运动和变速运动。 B .通过力的作用效果认识到力的存在。 C .用一条带箭头的线段表示力。

D .在研究密度定义时,我们把文字叙述变换成定义式。 二、不定项选择题(本题满分12分,共4个小题):每小题中至少有一个选项是正确的,请选出并填写在后面表格内(每小题全选对得3分,漏选得1分,错选或不选得0分)

10.下列说法中,不正确的是

A .根据公式ρ=m/V 可知,密度与质量成正比,与体积成反比。

B .弹簧受到的拉力与弹簧的伸长成正比。

C .马拉车在水平地面上运动,马拉车的力等于车拉马的力

D .当物体不受力时,一定处于静止状态。 11.下列知识结构中,正确的是

A .

B .

C. D. 状态 是否有一

定形状

是否有一定体积 固体 有 有 液体 有 无

气体 无 无

力的三要素 大小 方向 作用点

物理试题 第3页 (共8页)

12.如图是甲、乙两种物质的m -V 实验图像,以下说法正确的是:

A .甲的密度小于乙的密度。

B .甲、乙质量相同时,乙的体积大于甲的体积。

C .甲、乙体积相同时,甲的质量大于乙的质量。

D .同种物质的密度与质量、体积无关。

13.关于甲乙丙丁四辆汽车行驶的路程、速度、时间图像,分析正确的是

A .甲、丁都做匀速运动。

B .乙、丙都做变速运动。

C .丙此时一定受到力的作用。

D .乙此时受到平衡力的作用。

一、单项选择题

二、不定项选择题 题号 10 11 12 13 答案

二力

平衡条件

大小相等

方向相反 作用于同一直线

物体受力情况 运动状态 不受力 不改变 受

力 受平衡力 不改变 受不平衡力 改变

题号

1 2 3 4 5 6 7 8 9 答案

物理试题 第4页 (共8页)

卷(Ⅱ) 实验·应用·探究·推理(本卷满分70分)

得分 阅卷人 复核人 专题一:质量和密度(本专题满分15分,共2个小题,第1小题9分,第2小题4分) 1.回顾实验和探究:

(1)以下是“物质的质量和体积关系”的实验报告,请帮他填写完整

(2)测量液体的密度 原理

步骤 A .称出玻璃杯和剩余酒精总质量m 2 B .在玻璃杯中盛酒精,称出杯和酒精的总质量m 1 C .

将m 、V 值代入公式ρ=m /V 中算出ρ D .将杯中酒精倒入量筒中一部分,测

出这些酒精体积V E .算出量筒中酒精质量m

请你帮他将正确的实验步骤排列起来。正确的顺序是 。 表格 测量情况如上图所示,请你帮小明填写下表空白处的数据。

玻璃杯和酒精总质量m 1 /g 玻璃杯和剩余酒精总质量m 2 /g 量筒中酒精质量m /g 量筒中酒精体积V /㎝3

酒精密度ρ /(kg/ m 3) 76.0

2.运用知识解决问题:

体积为4×10-3m 3的铜球,其质量是24Kg ,试判断它是空心的还是实心的?(ρ铜=8.9×103Kg/ m 3)

表 格

次数

物体 m /g V /cm 3 V

m /(g/cm 3) 1 铝块1 54 20 2.7 2 铝块2 108 40 3 松木1 216 0.5 4

松木2

10

20

0.5

结论 比较发现:一种物质的 的比值是一定的,物质不同,其比值一般不同, 由此我们引入了 的概念。

物理试题 第5页 (共8页)

得分 阅卷人 复核人 专题二:力和运动(本专题满分27分,共2个小题,

第3小题19分,第4小题(1)1分(2)3分(3)4分) 3.回顾实验和探究:

(1)完成下面探究报告 题目 探究阻力对物体运动的影响 器材 小车、长木板、毛巾、棉布、木板、 装 置 图

步骤 在水平桌面上铺上粗糙程度不同的物体,让小车从斜面的 自由滑

下,这是为了 。

观察、测量并记录小车在不同表面上运动的

表格 请你画出数据记录表格

接触面

受到的摩擦力大小 小车运动的距离 毛巾 大 近 较大 木板

结论

说明:小车受到的阻力越小,速度减小的越 . 推理:运动的物体不受力,它将

(2)验证二力平衡条件

器 材 与 装 置

方 法 与 步 骤

1.在A 、B 处挂等重的钩码时,且F 1与F 2在一条直线上,纸板会保持 状态。如果A 、B 处挂不等重的钩码,纸板会 。

2.在 、 处挂等重的钩码时,F 1

与F 2虽然大小相等,方向相反,但是不在一条直线上,此时纸板会 。

3.在A 、B 处挂等重的钩码,使纸板静止。用剪刀将纸板一分为二,发现纸板会 。

结 论

只有当两个力同时满足 、 、 、

,这两个力就相互平衡。

市(区)___________________ 学校___________________ 班级_______________ 姓名_________________ 考号__________________ 密 封 线

4.运用知识解决问题:

(1)游泳时,手和脚向后划水,给水一个向后的力。因为力的作用是

(2)请在甲图中画出汽车匀速上坡时所受力的示意

图。

甲(3)一辆超载的货车正以80Km/h的速度在高速路上行

驶,其后方60Km处,一辆警车经过1.5h追上货车进行处理,问警车匀速行驶的速度是多少?

得分阅卷人复核人专题三:综合能力(本专题满分10分,共3个小题,

第5小题4分,第6小题(1)3分(2)3分)

5.综合问答:

学校运动场上的几个场景:

①百米运动员跑到终点不能立即停下来;

②运动员落到沙坑,留下了脚印;

③运动员用力蹬地后高高跳起,越过横杆;

④运动员把铅球托在手中静止不动。

请你挑选上述2个场景,用所学的物理知识进行解释:

(1)解释场景:(2)解释场景:

6.设计实验:

(1)请你设计一个验证性小实验,证明“重力的方向总是竖直向下的”

物理试题第6页(共8页)

(2)请你完成下列探究实验的设计方案

题目探究重力与质量的关系

器材三个质量不同的钩码、

步骤

数据

表格

得分阅卷人复核人

专题四:综合计算(本专题满分6分)7.一块体积为4×10-2m3的水泥板,建筑工人用800N的力竖直向上提,但未提起,此时,水泥板压向地面的力为1000N,求该水泥板的密度。(请写出解题思路,然后计算)

得分阅卷人复核人专题五:创造与探究(本专题满分12分,共3个小题,

第8小题4分,第9小题5分,第10小题3分)8.归纳式探究:

小雨通过查资料知道:在一定范围内,金属杆的伸长与它所受的拉力、长度、横截面积有关,于是他做了这方面的实验,得到了如下的数据:

物理试题第7页(共8页)

物理试题 第8页 (共8页)

t

v

T

0 v

实验次数

拉力F / N 长度l / cm 横截面积S /cm 2

伸长Δl /cm

1 1000 100 0.05 0.16

2 1000 100 0.10

0.08 3 1000 200 0.05 0.32 4 1000 400 0.10 0.32 5

500

200

0.05

0.16

(1)分析数据可知,金属杆伸长的长度可以用公式Δl= 表示,其中的比例常数k =

(2)能反映出金属杆伸长的长度Δl 与横截面积S 之间关系的图

像是 。

(3)当金属杆的长度为250cm ,横截面积是0.80 cm 2,伸长的长度0.4 cm 时,金属杆A 所能承受的最大拉力为 N 。 9.问题解决:

实验小组测一矿石的密度,手边只有天平(砝码)、一个烧杯、一桶水,请你帮它测出矿石的密度。

(1)说明测量的步骤。

(2)推导出矿石密度的数学表达式

10.演绎式探究:

由于流体的粘滞性,使得在流体中运动的物体要受到流体阻力。在一般情况下,半径为R 的小球以速度v 运动时,所受的流体阻力可用公式 f =6 Rv 表示。

(1)小球在流体中运动时,速度越大,受到的阻力 。

(2)密度为ρ的小球在密度为ρ0、粘滞系数为η的液体中由静止 自由下落时的v -t 图像如图所示,当速度达到v T 时,请推导出小球的半 径R 的数学表达式:R =

(球的体积V 球=43

—πR 3

) (以上配图说明,请将图画在方框内)

人教版九年级英语期中考试题(含答案)

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九年级英语期中测试卷

九年级英语期中测试卷 (时间100分钟满分100分) 一、单项填空(每小题1分,共15分) 1.—Is Total Soccer weekly round-up of soccer? —Yes.It provides us with latest news on soccer. A.a;a B.a;the C.the;the D.the; 2.My mother is strict with me.She doesn't allow me to go outside to play football my homework is done.I have to do some reading at home instead. A.unless B.until C.before D.though 3.—Your grandfather looks very healthy. —he plays sports every day,he is very healthy. A.Because;so B.Since;though C.Because;/ D.Though;/ 4.—It's raining again.What bad weather! —Yeah.And it is reported that the terrible weather will for another week. https://www.360docs.net/doc/3e19186741.html,st B.change C.take D.become 5.Jim has made this term that his parents will award him a new computer. A.such a great progress B.so great progress C.such great progress D.so a great progress 6.The old man had to sell his house even though it was his own wishes. A.above B.against C.with D.for 7.—No one would like to talk with Jack.Why? —Because he always excuses to cheat us. A.makes up B.dresses up C.puts up D.looks up 8.—I can't decide which film to watch. —you read the film review? A.Why not B.How about C.Why don't D.What about 9.—What did you say just now? —I said I would like some eggs and bread for breakfast. A.what B.if C.that D.whether 10.—Can I watch TV,Mum? —No,unless your homework. A.will be finished B.is finished C.will finish D.has finished 11.—I think necessary to work with friends and share different ideas.Do you agree? —Of course. A.it B.this C.that D.its 12.—There are so many policemen here.What happened? —It is said that a man a shop and took away many things. A.24-year-old;broke into B.24-years-old;broke into C.24-year-old;broke out D.24-years-old;broke out 13.—My brother has never been abroad.

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