4 年级科学声音
Quiz
•
Science
•
7th - 12th Grade
•
Practice Problem
•
Hard
CHONG Moe
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45 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
1.声音会反射吗?
会
不会
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
2. 以下都是声音的用处,除了
可以制成超声波
可以传递信息
可以探测海底
可以填饱肚子
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
以下哪项不是利用声音的反射制作的用具?
扩音器
眼睛清洁机
超声波探测器
3D电视机
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
找出哪个是利用声音的反射才能进行的活动?
探测胎儿
探测眼睛
探测天空
5.
FILL IN THE BLANK QUESTION
20 sec • 1 pt
超过人类听觉范围的声音叫做什么?请输入答案
6.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
. 当声波遇到【 】,比较容易反射。【 】里应该填入什么答案?
光滑表面
粗糙表面
7.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
以下哪样东西吸收声音的功能最好?
海绵
砖块
纸张
木头
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