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4 年级科学声音

Authored by CHONG Moe

Science

7th - 12th Grade

Used 11+ times

4 年级科学声音
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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?

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 BLANKS 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

(a)  

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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