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初二科学第9章

Authored by wee chewteng

Science

8th Grade

Used 7+ times

初二科学第9章
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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?

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

一个磁体有两个磁极,分别叫做______极和______极.

西

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

Media Image

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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