
四年级科学 单元五 直线传播+反射
Quiz
•
Science
•
4th Grade
•
Medium
world edu
Used 6+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 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
30 sec • 1 pt
光线被物体阻挡时,会形成什么?
3.
MULTIPLE CHOICE QUESTION
30 sec • 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
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪种现象涉及了光的反射原理?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中显示一个射线图。
哪项可能是R表面?
砖块
镜子
毛毯
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当光线照射在平滑的物体上时,反射出的光是。。
有规律的
没有规律的
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么粗糙的表面无法照出任何影像?
表面改变光的颜色
光线穿透表面
表面反射的光不规律
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