
電與磁 指北針
Authored by 羅正暄 羅正暄
Science
5th Grade
Used 3+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
指北針的指針箭頭指向北方的一端稱為什麼?
S極
正極
N極
負極
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
指北針的指針具有磁性,它是由哪一種材料製作而成的?
鐵
磁鐵
鋁片
礦物
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球本身就是一個大磁鐵,下列關於地球和地磁的敘述,哪一項不正確?
地磁N極靠近地球北方
地磁N極會吸引指北針的S極
地磁S極靠近地球北方
地磁S極會吸引指北針的指針箭頭
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
將磁鐵棒靠近指北針,指針會產生偏轉,哪一個圖的偏轉情形是正確的?
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
將通電的電線沿著南北方向放在指北針上面,指針會向西偏轉,若改變電池正、負極的連接方向,指針箭頭如何偏轉?
不會偏轉
向西偏轉
向東偏轉
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
為什麼要將漆包線兩端表面的漆刮除?
美觀
增加磁力
幫助通電
幫助辨識磁極
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
如圖通電後,指針會如何偏轉?
向西偏轉
向東偏轉
不會偏轉
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