摩擦力
Quiz
•
Science
•
6th Grade
•
Practice Problem
•
Medium
LEONG Moe
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪一个是摩擦力的作用?
灯泡亮了
橡皮擦擦掉字迹
用吸管吸饮料
用汤匙挖饭吃
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力在我们的生活中只会造成不方便。
对
错
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
摩擦力是怎样产生的?
当两个物体加热时。
两个物体互相接触时。
两个物体产生推力和拉力时。
两个物体往同一个方向移动时。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项有关摩擦力的说明是正确的?
摩擦力会磨损物体的表面。
摩擦力是可以看得见的。
摩擦力不能让物体稳固。
摩擦力会让人滑倒。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什轮胎上要有花纹?
I 和 II 而已
Il 和 IIl 而已
Ill 和 IV 而已
I 、 II 和 lll 而已
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中的人为什么会跌倒?
他喝醉酒。
推力把他推到。
水使鞋底与地面的摩擦力增加。
水使鞋底与地面的摩擦力减少。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
影响摩擦力大小的因素是哪两项?
I 和 II
II 和 III
I 和 III
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