
四年级 机械(杠杆)
Quiz
•
Science
•
1st - 12th Grade
•
Hard
chui ying ngu
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
图中物品应用了什么简单机械?
斜面
螺旋
尖劈
杠杆
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
核桃夹应用杠杆原理操作。
P、Q和R代表什么位置?
P:支点,Q:重点,R:力点
P:重点,Q:支点,R:力点
P:力点,Q:重点,R:支点
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
小明无法开启紧闭的饼干桶,哪项原理能帮助他?
杠杆
尖劈
齿轮
螺旋
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
杠杆有三个重要的位置,除了
重物点
支点
动力点
阻力点
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
什么是动力点?
支撑着杠杆
承受重物的位置
有精神做事
施力的位置
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
什么是阻力点?
支撑着支点
承受重物的位置
施力的位置
阻碍我们做事
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
支点越靠近阻力点,所施的力越_________。
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