4年级科学_单元10《杠杆》

4年级科学_单元10《杠杆》

4th - 5th Grade

15 Qs

quiz-placeholder

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4年级科学_单元10《杠杆》

4年级科学_单元10《杠杆》

Assessment

Quiz

Other

4th - 5th Grade

Practice Problem

Medium

Created by

K ST

Used 259+ times

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15 questions

Show all answers

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_________。

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

支点离阻力点越远,所施的力越_________。

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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