20210601隨堂練習
Quiz
•
Physics
•
8th Grade
•
Practice Problem
•
Medium
文宏 王
Used 3+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者必須由施力者接觸到物體,才能顯現出力的效應?
地球引力
靜電力
摩擦力
磁力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果以“―►”代表向東5公斤重的力,則“◄――― ”代表下列何者?
向東15公斤重
向西15公斤重
向北20公斤重
向南15公斤重
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
下列那些現象,可說明有力作用在物體上?(請選兩項)
電燈泡通電流而發亮
坐在球上,球變扁了
因為感冒而聞不出香或臭
滾動的球 慢慢停止
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
觀察下列各種現象,物體沒有接觸而有力的作用者為下列何者?(請選兩項)
彈弓射出石塊
鐵粉分布在磁鐵四周
月球繞地球旋轉
推開門
兩人相撞 而跌倒
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
彈簧下掛一石塊呈靜止,則此物體受哪些力而呈平衡?
地球引力及拉彈簧的力
重力及彈簧的拉力
物體拉彈簧的力及彈簧拉物體的力
浮力及地球引力
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
分別將一質量 10g 的砝碼掛在彈簧及橡皮筋下端,結果彈簧伸長了 5cm,橡皮筋伸長了 10cm,設在彈性限度內,則兩者產生的彈力以何者較大?
彈簧
橡皮筋
二者相等
無法判定
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何者屬於力的效應?
地震造成山崩
彈簧被拉長
鉛筆被折斷
上述三者皆為力的效應
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