四年级科学 - 声音(二)

Quiz
•
Science
•
4th Grade
•
Medium
Tay Poh Ling
Used 62+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
声音会反射吗?
会
不会
2.
MULTIPLE SELECT QUESTION
1 min • 1 pt
哪个地方的回音最久最长?
山谷
电影院
课室
箱子里
3.
MULTIPLE SELECT QUESTION
1 min • 1 pt
以下都是声音的用处,除了
可以制成超声波
可以探测海底
可以传递信息
可以填饱肚子
4.
MULTIPLE SELECT QUESTION
1 min • 1 pt
以下哪项不是利用声音的反射制作的用具?
扩音器
超声波探测器
眼睛清洁机
3D电视机
5.
MULTIPLE SELECT QUESTION
1 min • 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
6.
FILL IN THE BLANK QUESTION
1 min • 1 pt
超过人类听觉范围的声音叫做什么?请输入答案
7.
MULTIPLE SELECT QUESTION
1 min • 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
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