1. 哪项能够证明光沿着直线传播?

四年级科学评估

Quiz
•
Science
•
4th Grade
•
Medium
LEE Moe
Used 1+ times
FREE Resource
40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
舞台的聚光灯直射在舞台
泳池里的水看起来比实际的浅
碗中的硬币看起来再比较浅的位置
放大镜放大所观察的物体
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影响影子形状的因素包括?
物体与屏幕的距离
物体与光源的距离
光源照射的方向
物体摆放的方式
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如何让影子变大?
将物体远离光源
将物体靠近光源
将物体换成半透明体
将物体靠近屏幕
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
材料的来源有几种?
2
3
4
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
棉是从哪来的?
岩石
石油
动物
植物
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么器官能帮助我们排汗?
皮肤
肺
大肠
肾
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
吸气时,膈是往哪移?
往上
往下
保持不变
往左移
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