
KH 自然 是非 D
Authored by Wendy Hsieh
History
2nd Grade
Used 1+ times

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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。
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。
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。
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。
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。
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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