以下哪个是光源?
二年级科学 光和暗

Quiz
•
Science
•
1st - 3rd Grade
•
Medium
LEE Moe
Used 314+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
风扇
电灯
衣服
食物
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当光被不透明体阻挡时,就会形成_______。
阳光
反射
声音
影子
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个物体被光阻挡时会形成清晰的影子?
硬币
描图纸
玻璃
烧杯
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个物体被光阻挡时没有影子?
卡纸
石头
透明胶片
毛玻璃
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪个物体被光阻挡时会形成模糊的影子?
卡纸
石头
透明胶片
毛玻璃
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
光源和影子的位置是______的。
相同
相反
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
顺序排列照明用具的发展。
火把-》煤油灯-》灯笼-》电灯
火把-》灯笼-》煤油灯-》电灯
灯笼-》火把-》煤油灯-》电灯
火把-》灯笼-》电灯-》煤油灯
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