四年级科学 第五课
Authored by PHONG Moe
Science
4th Grade
Used 234+ times
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30 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 CHOICE QUESTION
45 sec • 1 pt
哪些用具是利用光的折射的原理制成？
眼镜和望远镜
眼镜和潜望镜
潜望镜和哈哈镜
望远镜和哈哈镜
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
哪项是能影响影子形状的因素？
光源与物体的距离
光源与屏幕的距离
物体的摆放方式
物体的大小
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当光源照射在哪个介质时不会产生折射的现象？
水
玻璃
空气
镜子
5.
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
6.
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
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项有关光的传播说明是正确的？
光会穿透任何物体
光只会沿着直线传播
光的传播不会形成影子
光的传播没有距离限制
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