
初二科学第9章
Authored by wee chewteng
Science
8th Grade
Used 7+ times

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8 questions
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1.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
判断以下物品哪个可被磁铁吸引?
铁
镍
金
钴
2.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
一个磁体有两个磁极,分别叫做______极和______极.
东
南
西
北
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
磁极间相互作用规律:_______极会相斥,________极会相吸
同;同
异;同
同;异
异,异
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如图所示,张华同学做“隔着木板用磁铁吸引铁钉”的实验.实验所用的器材是( )
磁铁、铁钉、木板
A磁铁、木板、塑料
磁铁、铁钉、玻璃
铁钉、磁铁、搪瓷
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
钢棒一端接近一永磁体的N极时,发现两者相互排斥,则钢棒原来( )
有磁性,且接近端是N极
没有磁性
无法确定
有磁性,且接近端是S极
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种方法可使一根铁棒带上磁性?
加热
敲打
用磁铁的一极沿着同一个方向摩擦
以上皆可
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪种方法可使一根原本带有磁性的铁棒失去磁性?
敲打
用磁铁沿着同一个方向摩擦
连接磁体
放置在干燥处
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