力
Quiz
•
Science
•
7th - 12th Grade
•
Practice Problem
•
Medium
TAN Moe
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
上图显示一个男人正在玩桌球。
在这个游戏中,是什么力移动球?
摩擦力
地心引力
拉力
推力
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
以下哪项涉及拉力?
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
在以下活动中,哪些涉及推力和拉力?
4.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
上图显示一个网球选手准备击打向她迎面而来的网球。
当网球被击时,会出现什么情况?
网球停止不动
网球会变得更轻
网球改变移动的方向
网球改变移动的速度
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
上图显示乒乓球被挤压后出现凹陷状况。
从以上观察,可作出什么结论?
力可以改变物体的形状
力可以改变物体移动的速度
力可以改变物体移动的方向
力可以停止正在移动的物体
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是摩擦力?
阻碍物体移动的力
推动静止不动的物体的力
使移动的物体静止不动的拉力
施加在正在移动的物体上的推力
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
上图显示大雨时,一辆汽车在打滑。为什么雨水会造成这种现象?
雨水磨损轮胎
雨水使刹车器损坏
雨水阻止汽车移动
雨水减少了轮胎和路面之间的摩擦力
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