
补习 初三下册 第8章
Quiz
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Science
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9th Grade
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Practice Problem
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Medium
Sheng Hao Tan
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
我们听见的声音,是一种波,波可以靠空气传播。下列关于波的传递,说法正确的是
波能将波上的物质沿着波的传播方向传递出去
波可以将波源的振动形式传递出去
波可以将波源的振动形式传递出去
波在传播过程中,能量不会随波传递出去
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
水波属于横波,声波属于纵波。以下关于横波和纵波的区别,错误的是
横波有波峰,纵波有密部
横波有波谷,纵波有疏部
横波不能在真空中传播,但纵波可以
横波中,相邻波峰之间的距离为波长
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在同一个时间内,蜜蜂飞行时翅膀振动的次数,明显比蝴蝶飞行时振动的次数还要多。物体在1秒内振动的次数称为
频率
振幅
波长
周期
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
频率的单位为
赫兹
牛顿
千克
米每秒
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如图8-1所示为某物体振动所产生的波形图,下列说法正确的是
该波为纵波,波长为1m
该波为纵波,波长为2m
该波为横波,波长为 1m
该波为横波,波长为2m
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
物质能协助波的传播,但不是每个物质都能传递横波。下列介质无法传播横波的是
细绳
空气
薄纸片
弹簧
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲、乙、两、丁四家电合的频率分别为88.1 Hz、89.3 Hz、101.8 Hz和104.6 Hz。那么它们之中波长较大的是()电合。
甲
乙
丙
丁
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