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四年级科学单元六声音

Authored by Cheng Kang

Science

4th Grade

Used 294+ times

四年级科学单元六声音
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

以下哪项不是声音的反射?

回音

超声波

声呐

镭射

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

声音是由物体的___所产生的

振动

摇摆

反射

折射

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

我们在太空说话时听得见声音吗?

听得见

听不见

不知道

4.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

以下哪些是声音的应用?

声呐

超声波

降低声量

声音向四面八方传播

5.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

我们在___呐喊时,会听见回音

空房间

高山

街道

太空

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

声音有哪些特征?

声音向直线传播

声音向四面八方传播

声音会折射

声音会反射

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

如何减少声音的污染?

在道路旁种植树木

减少乱丢垃圾

听音乐时使用适当的声量

把耳机丢掉

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