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KH 自然 是非 D

Authored by Wendy Hsieh

History

2nd Grade

Used 1+ times

KH 自然 是非 D
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40 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

敲擊紙盒時,紙盒上的紙片會跳動,是因為紙盒產生振動的現象。

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2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

電風扇運轉時因為扇葉會旋轉,不會振動,所以沒有聲音。

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3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將尺的一端固定在桌面上,手指用不同大小的力撥動尺的另一端時,尺振動的大小都相同。

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4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

相同的聲音透過空氣、液體和固體傳播時,聽起來都不太一樣。

×

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

將雷射筆的光分別從側邊和斜上方照射鏡子,反射出來的光行進路線會不一樣,但都會直線行進。

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6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

透過「光的反射」,我們才能在鏡子中看到自己的影像。

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7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

小明背後的衣服不小心弄髒了,他只要拿一面鏡子,在不回頭的情形下,就能看見自己背後的衣服哪裡髒了。

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