4年级科学 第6课 声音
Quiz
•
Science
•
5th Grade
•
Practice Problem
•
Medium
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项是声音的特性?
声音可以被毁灭
声音不可以被反射
声音传播到四面八方
只有在敲打物体时才会产生声音
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图1显示一组学生进行的一项简单实验。根据上述材料,如何产生声音?
击
吹
拍
弹
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
阿妮在一楼的课室里,却能清楚地听见她的班主任在楼下礼堂授课。为什么?
她的班主任喊得很大声
她的班主任用放大镜解决人类的极限
课室里的物体吸收了声音
老师声音的振动传播到四面八方
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图2显示一辆救护车。为什么这种交通工具行驶时发出鸣笛声?
发出不会对人类耳朵造成伤害的声音
告知大众让路
吸引周围人群的注意
求助以修理坏车
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项可以减少声音污染?
利用海绵来吸收声量
举办清洁运动
在屋子周围建设篱笆
在露天场所置放扩音机
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下面哪项不是回音的用处?
声纳
鱼的回音
雷达
超声波
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
声音能( )到四面八方。
吸收
传播
声呐
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