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金中河西·8下期末试卷·物理·26年卷

  • 2026-07-14 12:43:52
金中河西·8下期末试卷·物理·26年卷
更多最新期中、期末试卷:请点击👉 学科试卷分析
🌹试卷题型分析&备考建议(文末可下载试卷+答案)

南京市金中河西·26期末·物理

试卷整体难度

整体定位⭐⭐⭐⭐(中等偏难,约7~7.5/10),重实验探究与浮力压强综合,区分度较高。基础题占约65%~70%,中档题20%,压轴/综合题10%~15%。

💥试卷特点

选择第12题(力传感器+F-h图像+浸没分析)、填空第19题(两液体+两正方体浮沉比较密度/压强)、第24题(自制密度计+浮力标尺分析)、第28题(气柱船多物体浮力综合)有一定思维量。

实验题考查"摩擦力控制变量""同一直线二力合成""真空不能传声/阻力对运动影响""浮力影响因素""密度特殊测量",重视操作步骤目的描述和误差分析

✅试卷易失分点

浮力与液体压强综合受力分析、密度计原理、f-t/v-t图像结合摩擦力判断、特殊法测密度的步骤表述。

🟠 考试难点(拉开差距)

  • 浮力+压强综合:(第19题)这道题综合了压强、浮力、密度、受力平衡、阿基米德原理五大板块,是典型的“浮力压强综合题”,对学生的逻辑推理和方程构建能力要求较高。

  • F–h图像分析:力传感器示数随浸入深度变化,判断G物、F浮、V物、是否接触容器底(第12题)

  • 自制密度计原理:漂浮时F浮=G自→ρ液∝1/h,量程与刻度均匀性(第24题)

  • 多气室浮力模型:总浮力=各气柱排开水重力,破损后ΔF浮变化→液面/h变化(第28题)

  • 实验表述规范:控制变量法、转换法的文字描述,误差原因分析

🟠 备考建议

  1. 抓牢基础:熟记密度、压强、浮力核心公式及单位换算,确保选择题前6题和填空基础空不丢分。

  2. 突破浮力:重点练习漂浮、浸没、多物体组合三类模型,吃透F–h图像分析(如第12题)。

  3. 规范实验:熟背“控制变量法”“二力平衡”“转换法”等实验表述模板,特别是摩擦力、浮力影响因素实验。

  4. 限时训练:用近两年南京各区八下期末真题做限时模拟,重点练第12、19、24、28这类综合压轴题。

⭐试卷PDF版本+答案解析均可下载:

2026金陵河西八下期末试卷物理卷.pdf 

部分试卷如有问题可以反馈,后期会继续分享其他学校月考相关试卷和2024-2026学年南京市上学期期末试卷等.

(月考/期中试卷领取,请扫描图片微信二维码即可 ↑↑ )

⏰暑假时间宝贵,当下加油,2026的每一天都行动+加油!

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  1. CONNECT:[ UseTime:0.000667s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000750s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.003550s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.008132s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000737s ]
  6. SELECT * FROM `set` [ RunTime:0.000272s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000610s ]
  8. SELECT * FROM `article` WHERE `id` = 507465 LIMIT 1 [ RunTime:0.005876s ]
  9. UPDATE `article` SET `lasttime` = 1784018095 WHERE `id` = 507465 [ RunTime:0.007189s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.001027s ]
  11. SELECT * FROM `article` WHERE `id` < 507465 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.006178s ]
  12. SELECT * FROM `article` WHERE `id` > 507465 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000508s ]
  13. SELECT * FROM `article` WHERE `id` < 507465 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.024925s ]
  14. SELECT * FROM `article` WHERE `id` < 507465 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005117s ]
  15. SELECT * FROM `article` WHERE `id` < 507465 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002707s ]
0.143500s