四年级科学 光

Quiz
•
Science
•
4th Grade
•
Medium
KHAN Moe
Used 905+ times
FREE Resource
20 questions
Show all answers
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
光线被物体阻挡时,会形成什么?
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?
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
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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