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四年级科学 光

Authored by KHAN Moe

Science

4th Grade

Used 930+ times

四年级科学 光
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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下哪项有关“光”的说明是正确的?

光沿着直线传播

光会转弯

2.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

光线被物体阻挡时,会形成什么?

(a)  

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

什么是透明体?

能让电流通过的物体

能让光线透过的物体

能导热的物体

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

以下哪个组合是正确的? (答案可超过一个)

不透明体-书本

半透明体- 电视机

透明体- 玻璃杯

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

以下哪个是半透明体?

Media Image
Media Image
Media Image

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

当光线照射在不透明体时,所形成的影子是。。。

清晰的

模糊的

非常模糊的

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

图中显示丽丽站在一面毛玻璃前观察外面的景物。根据以上的情况,以下哪项推断是正确的?

毛玻璃是不透明体

毛玻璃是半透明体

毛玻璃是透明体

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