
4-1.4-2自然複習
Quiz
•
Science
•
5th Grade
•
Practice Problem
•
Medium
陳耀民 老師
Used 2+ times
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40 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
鴿子可以進行方向的辨認是因為牠的體內存有奈米級磁性粒子可以感應到地磁。
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
沒有放入鐵棒的通電線圈,即使是通了電也無法吸引迴紋針,其主要的原因是產生的磁力太小。
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
指北針平放在通電的電線之下,電線與指北針的南北方重疊,此時我們可以依據指北針指針偏轉的角度大小來判斷電流的大小。
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
磁力線的分布密度越高,表示磁場愈強。
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
通電的線圈實驗中,漆包線兩端磨除後,並往同方向纏繞在吸管上再通電,此時會發現無法吸引迴紋針,主要的原因是沒有磁力。
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
製作電磁鐵時,放置在線圈內的棒狀物材質,並不會影響電磁鐵的磁力大小。
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
把通電的電線放在指北針上方,指針會偏轉;將電池反方向接時,指針偏轉的方向會相反。
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