置一玻璃板於兩磁極間,則下列敘述何者正確?
翰林國中自然3下ch2-1磁鐵與磁場

Quiz
•
Physics
•
9th Grade
•
Medium
翰林出版國中自然 翰林出版國中自然
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
可以完全隔絕磁力
不能隔絕磁力
可以改變磁力方向
可以增強磁力
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
如圖,下列何者是地球內部假想的磁鐵之情形?
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
下列各項敘述,何者是正確的?
磁鐵受到敲打後,其磁力會增強
磁鐵在高溫下,其磁力會增強
所有的金屬都可以被磁化
將磁棒自兩極的中間折斷,則折斷處皆會產生新的磁極
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
附圖為棒狀磁鐵折成兩段的情形,則下列敘述何者錯誤?
一磁鐵折斷後的兩段,磁力都消失了
一磁鐵折斷後的兩段,變成兩個小磁鐵
附圖中的甲端帶N極磁性,乙端帶S極磁性
一磁鐵折斷後,磁力會減弱
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
在磁場的範圍內,磁場的方向為何方?
北方
南方
磁針S極所指的方向
磁針N極所指的方向
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
將一鐵塊放在一磁鐵附近而被磁化,如圖所示,磁力線由鐵塊左端進入,右端出來,則鐵塊的N極在何處?
鐵塊的下方
中央
左端
右端
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
有關靜電力與磁力的區別,下列何者錯誤?
兩者皆為超距力
兩者皆有吸引力和排斥力
正、負電荷皆可單獨存在
N極、S極皆可單獨存在
8.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
地球本身可視為一大磁鐵,那麼空中便有許多磁力線通過,赤道上空的磁場方向為何?
向東方
向西方
向南方
向北方
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