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康自六上 L4 基礎

Authored by Youjiu Youjiu

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3rd Grade

Used 1+ times

康自六上 L4  基礎
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31 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

指北針的指針箭頭為S極,會被磁鐵N極吸引。

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2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

只要將長條形的物品,例如牙籤、竹筷等,水平懸吊起來,靜止時都會指向南、北方。

×

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電流可以產生磁場,所以通電的電線也具有磁場,可以使指北針的指針偏轉。

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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

指北針的指針除了會受到磁鐵和地磁的影響而偏轉,電流也能讓指針產生偏轉。

×

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

如如將大頭針水平懸吊起來,靜止後,發現大頭針指向東方,這個現象說明了大頭針具有磁性。

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

用磁鐵棒的任何一端靠近指北針,都可以吸引指北針的指針箭頭。

×

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

地球具有磁性,它的內部就好像有一支長條形的大磁鐵。所以當我們將手中的迴紋針輕輕放開後,迴紋針會被地球的磁力吸引到地上去。

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