四年级：光的特性
Quiz
•
Science
•
4th Grade
•
Practice Problem
•
Easy
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50 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么我们能够看到四周的物体？
物体的反光能力很强。
物体能够吸收大部分的光。
物体的表面一般上是光滑的。
物体把光反射到我们的眼睛里。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下是有关光的X特性的说明。
-当光照射到物体上时会改变传播的方向。
X代表什么光的特性？
光会反射
光会反射三次
光不是直线传播
光的反射没有规律
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么万花筒里会出现许多美丽的图案？
万花筒让光线透进去了
万花筒阻挡了光线的传播
万花筒里的图案一般有七种颜色
万花筒里的镜子多次反射光线所造成的
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
上图显示Q物体反射光线的情况。
根据上图，下面哪种有可能是Q物体？
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
以下哪些物体应用光反射的原理来操作？
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
P和Q分别是什么表面？
P ：砂纸 Q ：玻璃窗
P ：铁片 Q ：镜子
P ：镜子 Q ：柏油路
P ：沙地 Q ：木板
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