
南一國中自然3下_ch2-1
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Hard
南一 自然
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電影X戰警中的萬磁王可以任意操控磁力,請問依據科學原理,萬磁王只能控制下列哪些金屬物質(甲)鐵;(乙)銅;(丙)銀;(丁)鎢;(戊)鈷;(己)鎳?
甲乙丙丁戊己
甲乙丙
甲戊己
甲乙丁己
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
若將一個磁鐵分成10等分,10個小磁鐵後,請問會有多少個磁極存在?
2
10
20
210
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於磁力的敘述何者錯誤?
磁力與萬有引力都不需接觸物體,即能產生力的效應
磁力與靜電力都具有吸引力及排斥力
磁力與浮力都不需要接觸物體,即能產生力的效應
兩物質間具有磁力作用的同時,也具有萬有引力存在
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關磁化的敘述,下列何者正確?
任何物質都可被磁化
被磁化後的鐵釘若無法長期保有磁性。則稱為暫時磁鐵
一鐵釘被一磁鐵棒磁化,鐵釘靠近磁鐵棒的那端產生同名極,與磁鐵棒互相排斥
容易被磁化的物質,其磁性也較易保存,不易消失
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有一個未知金屬棒狀物質,以通電電磁鐵靠近兩端時,發現不論以N極或S極靠近金屬棒,兩端均被吸引,有關此棒狀物質的敘述,何者正確?
此金屬一端為永久磁鐵,一端為暫時磁鐵
此金屬有可能是用鐵製作而成
此金屬一端為S極,另一端為N極
此金屬有可能是用鋁製作而成
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關磁場的敘述,何者正確?
在磁場中任何物質都會被磁化
磁針N極受力愈大表示磁場愈弱
把N極在磁場中所受磁力的方向,定義為磁場方向
在磁場中同一地點,N極和S極所受磁力方向相同
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關地磁的描述,下列何者錯誤?
羅盤可用來指示方向的原因是因磁針受地磁作用,N極恆指向北方的關係
羅盤磁針N極所指的北極就是地理北緯90度的地方
地磁的磁場形狀像一棒形磁鐵所建立的磁場形狀
地磁的N極在地球的南方,地磁的S極在地球的北方
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