
六年级科学.单元六。摩擦力
Quiz
•
Science
•
6th Grade
•
Medium
TAN Moe
Used 158+ times
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是摩擦力?
一种涉及阻碍物体的移动的力
一种涉及改变物体的力
一种当两个物体的表面互相接触时所产生的阻碍物体移动的力
施加在物体上推力和拉力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
实验里, 一辆玩具车在不同的表面上行走。
哪一种表面能使玩具车停止得最慢?
玻璃表面
沙地表面
草地表面
地毯表面
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项活动显示摩擦力的益处?
鞋子底部的纹路磨损
磨刀让刀更尖利
使物体难以移动
笔尖变钝
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图上显示工人在推盒子而面对的困难。
下列哪项说明是推动盒子最容易的方法?
用绳子来拉动盒子
撒一些沙在地上
撒一些盐在地上
放滚杠在盒子下面
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
飞机有流线型外型是为了减少飞行时与空气所产生的摩擦力。
对
错
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在脚踏车的齿轮和链条上油,可以防止金属零件生锈,也可以减少运转时产生的摩擦力。
对
错
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
袜子的底部有止滑的颗粒,可以增加袜底与接触面的摩擦力。
对
错
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