四年级科学练习37（光的折射）
Authored by LIEW Moe
Science
4th Grade
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个物品是利用光的折射原理制成的？
望远镜
侧镜
万花筒
望后镜
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
字条上的字太小，贾芸想看清楚却找不到放大镜。
哪个方法能帮助她解决问题？
移到太阳下看纸条
把纸条放在毛玻璃下
透过镜子的放射看字条
透过盛了水的玻璃杯看纸条
3.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
哪项显示光的折射原理？（有两个答案）
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图显示在一个盛了水的碗里，硬币的位置看起来比实际深度浅。哪项是导致这种现象的主要原因？
光沿着直线前进
光遇到水发生反射的现象
光在空气被折射了
光穿越不同介质时，光线的传播方向发生了变化
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图显示你把一个玻璃杯放在距离字卡5cm的位置。
你把水倒入玻璃杯后，会出现怎样的现象？
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
生活中所看到星星及水中的鱼，都不是真正的位置，这是因光的哪一种现象所造成的？
正射
反射
折射
直进
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
光以相同的入射角，從水中射出到四種不同的介質中，其折射情形如圖所示。則光在哪一種介質中的傳播速率最快？
丁
丙
乙
甲
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