4年级科学_单元10《杠杆》
Authored by K ST
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4th - 5th Grade
Used 272+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 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
2.
MULTIPLE CHOICE QUESTION
30 sec • 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
3.
MULTIPLE CHOICE QUESTION
30 sec • 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
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
支点越靠近阻力点，所施的力越_________。
小
大
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
支点离阻力点越远，所施的力越_________。
小
大
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
杠杆可以分成几种类？
一种
两种
三种
四种
7.
MULTIPLE CHOICE QUESTION
30 sec • 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
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