
槓桿
Authored by Ka Yuen
Science
6th Grade
Used 33+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
判斷以下句子的描述對不對。
「滾子可以增加重物移動時與接觸面的摩擦力,人們便能用較小的力移動重物。」
對
錯
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪些工具沒有應用槓桿原理?
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
槓桿原理的「重點」是指甚麼?
槓桿轉動的中心
槓桿負荷的位置
槓桿施力的位置
槓桿最重的位置
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
判斷以下句子的描述對不對。
「槓桿的轉動中心或支撐槓桿的位置,稱為支點。」
對
錯
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
力臂是指
支點到力點的距離
支點到重點的距離
重點到力點的距離
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
判斷以下句子的描述對不對。
「所有以槓桿原理設計的工具都能省力。」
對
錯
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
以下哪種情況下的槓桿能省力?
力點與支點的距離比重點與支點的距離長
力點與支點的距離比重點與支點的距離短
力點與支點的距離較遠
重點負荷的物品太重
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