
期末复习5-选择8题
Authored by yiqing lin
Physics
8th Grade
Used 5+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
关于声现象,下列说法正确的是
声音的振幅越大,音调越高
声音在水中比在空气中传播慢
凡是发声的物体一定都在振动
禁止鸣笛,是在人耳处减弱噪声
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如图所示的四种现象的形成,需要吸热的是
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列光现象中,由光的直线传播形成的是
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
在“探究凸透镜成像规律”的实验中,首先需调整烛焰和光屏的中心位于凸透镜的主光轴上,下列照片中的情况属于已经调整好的是
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
雷雨天,某物理兴趣小组为估算闪电发生位置到他们的距离,设计出用声速乘以时间的估算方案,则时间的测量应选择的方法是
闪电时,记录刚刚看到该次闪电至刚刚听到雷声的时间
闪电时,记录刚刚看到该次闪电至雷声刚刚结束的时间
用选项A的方法,测量该次闪电及随后发生的两次闪电的时间,计算三次的平均值
用选项B的方法,测量该次闪电及随后发生的两次闪电的时间,计算三次的平均值
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
如图所示,7D电影是在立体影片的基础上增加了运动座椅,影片播放前,观众系安全带固定在运动座椅上,随着影片播放,能让观众随座椅一起感受到颠簸、震颤等效果,有身临其境的观影感,以下说法正确的是
以座椅为参照物,地面是静止的
以座椅为参照物,观众是静止的
以地面为参照物,观众是静止的
以观众为参照物,座椅是运动的
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
小汽车匀速直线行驶在公路上,坐在副驾驶位置的小红观察到小汽车速度表的指针始终在110km/h位置处,在超越相邻车道上同向匀速行驶的另一辆大客车的过程中,小红发现自己乘坐的小汽车完全超过大客车所用的时间约为5s,则下列四个选项中最接近大客车速度的是
60km/h
80km/h
100km/h
120km/h
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