
第8章 声音的现象
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿伟在真空瓶中敲响闹钟,却听不到声音。这说明:
声音消失了
闹钟没有振动
真空中无介质传播声音
阿伟听觉有问题
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当艺术老师在韵律体操中挥动彩色丝带时,丝带产生上下波动。这是:
纵波
横波
声波
超声波
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在学校的升旗仪式上,国歌从远处传来时有轻微的延迟。这是因为:
声音传播得很快
声音无法传播
声音需要时间传播
声音源太小
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
蝙蝠主要通过什么在夜间捕捉昆虫?
高速飞行
良好的视力
回声定位
红外感应
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
小明敲击鼓面越用力,声音就越响。这是因为:
频率增加
振幅增加
音色变化
共鸣减弱
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪种现象最有可能是纵波?
海浪撞击岩石
彩色丝带上下摇动
从麦克风发出的声音
水面上扩散的涟漪
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当你在山谷中大声喊叫并听到“回声”时,原因是:
声音停留在空气中
声波折射回耳朵
声波反射回耳朵
声音从岩石中传播回来
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