
Y4 单元五 光沿直线传播
Authored by Loi Yueneng
Science
4th Grade
Used 4+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
光是沿着________传播的。
直线
虚线
反射
折射
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
舞台上的光束是_______的
弯曲
笔直
模糊
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
玻璃窗是________, 透光能力_______, 形成________的影子。
透明体,弱,模糊
透明体,强,清晰
透明体,强,非常模糊
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
书本是________, 透光能力_______, 形成________的影子。
不透明体,弱,清晰
半透明体,强,清晰
不透明体,弱,非常模糊
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
毛玻璃是________, 形成________的影子。
透明体,模糊
半透明体,清晰
半透明体,模糊
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根据上图,哪个与上图影响影子大小的因素有关?
物体与光源的距离
光源与屏幕的距离
物体的摆放方式
光源照射的方向
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
光源与物体的距离越____,影子的大小越___
近,小
近,大
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