六下自然期中考是非題02
Quiz
•
Science
•
6th Grade
•
Practice Problem
•
Easy
勁男 李
Used 4+ times
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50 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
動滑輪的施力臂比抗力臂長,是個省力的槓桿工具。
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
測量利用動滑輪拉動物體需要花費多少的力時,要考慮到滑輪本身的重量。
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
以螺絲起子為例,握柄的部分稱為「輪」,金屬棒的部分稱為「軸」。
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
「以輪帶軸」的工作方式較費力。
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
輪軸工具中的輪與軸會同步運轉,輪轉動一圈,軸也會轉一圈。
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
動滑輪與定滑輪都是省力的工具,但是如果施力的方向相同,物體移動的方向卻不同。
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
利用定滑輪工作,可以省力並加快工作的速度。
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