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八年级物理第一单元测试 – 学霸试题库

八年级物理第一单元测试

八年级物理上册第一单元测试

科目: 物理
年级: 八年级
范围: 机械运动


📝 测试说明

本试卷为八年级物理上册第一单元测试卷。

考试时间: 90 分钟
满分: 100 分

⚠️ 本试卷包含详细答案与解析!


📋 试卷内容

一、选择题(每题 3 分,共 30 分)

  1. 下列现象中,属于机械运动的是( )
    A. 灯光闪烁 B. 花香四溢 C. 骏马奔腾 D. 气温升高

  2. 关于参照物,下列说法正确的是( )
    A. 只有静止的物体才能作为参照物
    B. 只有运动的物体才能作为参照物
    C. 参照物可以任意选择
    D. 研究地面上物体的运动,必须选择地面为参照物

二、填空题(每空 2 分,共 20 分)

  1. 物理学中,把物体______的变化叫做机械运动。

  2. 速度是表示物体______的物理量。

三、计算题(共 50 分)

21.(本小题满分 15 分)一辆汽车以 72km/h 的速度匀速行驶,求:
(1)汽车 5min 内行驶的路程;
(2)汽车通过 36km 的路程需要的时间。


💡 参考答案

一、选择题

  1. C 2. C

二、填空题

  1. 位置 12. 运动快慢

三、计算题

  1. 解:
    (1)v=72km/h=20m/s,t=5min=300s
    s=vt=20m/s×300s=6000m=6km
    (2)t=s/v=36km÷72km/h=0.5h

同学们加油!💪