1130201SC-mid-01
Authored by 陳俊明 陳俊明
Science
1st - 5th Grade
Used 11+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
榨汁器是支點在中間的槓桿工具，使用時不省力也不費力。
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
利用尺和鉛筆製作一個簡易翹翹板，當支點和抗力點不動，手指壓在尺面的位置越靠近支點，就越省力。
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
當槓桿的支點在中間，且抗力大小相同，如果施力臂比抗力臂長時，會比施力臂和抗力臂一樣長時還省力。
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用定滑輪拉起物體時，施力大小約等於物體加滑輪總重量的一半。
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果想要省力且方便將櫃子從一樓搬到頂樓，可以利用定滑輪和動滑輪組成的滑輪組來搬運。
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
使用輪的半徑是3公分、軸的半徑是1公分的輪軸工具時，當輪轉動1圈，軸就會轉動3圈。
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
生活中，我們常會利用齒輪或齒輪組，來改變物品的轉動速度或方向。
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