
kssrsemakan 四年级科学光的特性
Authored by TIONG Moe
Science
4th Grade
Used 2+ times

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50 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
什么是透明体?
有弹性物体
能让电流通过的物体
能让光线透过的物体
能传热的物体
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
哪项会影响影子的形状?(答案可超过一个)
光源照射的方向
物体摆放的方式
物体表面的光滑度
物体与光源的距离
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当光从一个介质进入另一个介质时,光线的传播方向会发生偏折。
以上说明光的什么特性?
光沿着直线传播
光能照明
光会反射
光会折射
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项工具应用光的反射原理制成?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如何才能让影子变得更大?
减少物体和屏幕的距离
减少物体和光源的距离
增加光源
减少物体的面积
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中显示影子和光源。
哪个是物体影子正确的位置?
P
Q
R
S
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中显示P物体的影子。
根据影子,推测P物体的形状。
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