辽宁省大连市普兰店市第三十中学2024-2025学年九年级上学期10月月考物理试卷
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这是一份辽宁省大连市普兰店市第三十中学2024-2025学年九年级上学期10月月考物理试卷,文件包含202410普兰店物理1pdf、九物docx等2份试卷配套教学资源,其中试卷共8页, 欢迎下载使用。
一、选择题(本题共9小题,每小题2分,共18分)
二、填空题(本题共6小题,每空1分,共12分)
10.需要;并 11.引力;扩散 12.等于;等于
13.金属;石墨 14.热值;做功 15.B;温差小
三、作图题(本题共2小题,每小题2分,共4分)
16.如图: 17.如图:
第16题答案 第17题答案
四、实验题(本题共4小题,共24分)
18.(6分)每空1分
(1)质量
(2)远
(3) = 1 \* GB3 \* MERGEFORMAT ① 规格相同的加热器,加热时间相同 = 2 \* GB3 \* MERGEFORMAT ②水 = 3 \* GB3 \* MERGEFORMAT ③水
(4)水
19.(6分)每空1分
(1)增加
(2)降低;减小
(3)D
(4)热传递
(5)错误
20.(6分)每空1分
(1)较大
(2)电流表的正、负接线柱接反了
(3) = 1 \* GB3 \* MERGEFORMAT ①0.30 = 2 \* GB3 \* MERGEFORMAT ②并联电路中,干路电流等于各支路电流之和
(4)干路;将连接AB的导线的B端改接到电流表的负接线柱(或F接线柱)上
21.(6分)每空1分
(1)从B到A
(2)不改变
(3)不亮
(4)亮;不亮
(5)D
五、综合应用题(本题共3小题,共22分)
22.(8分)
(1)Δt=t2-t1=45℃-15℃=30℃ ··············································· 1分
V=V2-V1=4357.375m3-4357.095m3=0.28m3 ··························· 1分
(2) Q吸=cmΔt ····························································· 1分
=4.2×103J/(kg·℃)×50kg×30℃ =6.3×106J ··························· 1分
(3) Q放=qV ······································································ 1分
=3.0×107 J/m3×0.28m3=8.4×106 J ···· ···························· 1分
η=Q吸/Q放 ···························································· 1分
=6.3×106J/8.4×106 J=75﹪ ·········································· 1分
23.(8分)
(1)I2=I-I1 ··········································································1分
=0.34A-0.18A=0.16A ······················································· 1分
(2)不变;变小 ················································· 每空1分,共2分
(3)不亮;不亮;A1和A2;S1 ···························· 每空1分,共4分
24.(6分)每空1分
(1)不能 (2)BC
(3)AD (4)提高
(5)做功 (6)BCD
题号
1
2
3
4
5
6
7
8
9
答案
D
B
A
B
C
D
ABD
BCD
BC
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