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110_2G5402

Authored by Black David

Science

5th Grade

Used 3+ times

110_2G5402
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94 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

直笛的發聲原理是利用改變空氣柱的長短,發出高低不同的聲音。

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

觀察烏克麗麗時,用手彈撥不同粗細的弦,不會有聲音的高低變化,只會有聲音的大小變化。

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

我們可以聽到大鼓的聲音,是因為鼓面振動會發出聲音,而音箱可以讓聲音變得更大。

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

直笛和小號所發出的聲音,都是靠吹奏者手指振動所產生的。

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

敲擊鐵琴較長的金屬片所發出的聲音,比敲擊鐵琴較短的金屬片所發出的聲音高。

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

烏克麗麗的音箱是擴大聲音的構造。

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

如果遮住烏克麗麗的音箱響孔,彈撥時所發出的聲音會變小。

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