下列何種現象可證明物體發出的聲音,是由於物體振動而產生的?
112-8上自然ch3-2~3-4習作練習

Quiz
•
Physics
•
8th Grade
•
Medium
林 炳弘
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電鈴在玻璃罩內振動,若將空氣逐漸抽出,聲音會漸漸變弱
敲擊鼓面發出聲音時,鼓面上的米粒會隨著鼓面的振動而上下跳動
聲音在水中的傳播速率比在空氣中還快
聲音在空氣中的傳播速率與空氣溫度有關
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列有關聲音的敘述,何者正確?
在空氣中傳播的聲波是一種橫波
聲音只能在空氣中傳播
聲音在空氣中傳播時,空氣隨聲波前進
聲音在空氣中傳播時,空氣隨聲波振動
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
聲音在下列哪一種介質中傳播速率最快?
20℃的水
20℃的鋼鐵
20℃的空氣
15℃的空氣
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
米勒畫作《晚禱》中,有一對務農夫婦因聽到遠處教堂傳來的鐘聲,而低頭禱告。如果教堂的鐘聲在傍晚五點準時響起,而在田裡工作的夫婦於4秒後聽到鐘聲,則教堂距離夫婦倆多少公尺?
85
170
680
1360
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖,取一電鈴放在抽氣機的玻璃罩內,通電後鈴槌敲擊電鈴發出聲音。然後將玻璃罩內空氣漸漸抽出,在此抽氣過程中,若鈴槌仍持續敲擊,則電鈴的音量將如何改變?
變大
不變
變小
不一定
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如右圖,取一電鈴放在抽氣機的玻璃罩內,通電後鈴槌敲擊電鈴發出聲音。然後將玻璃罩內空氣漸漸抽出,關於電鈴音量變化的原因,下列敘述何者正確?
鈴聲被抽氣機抽走了
鈴槌振動頻率改變
空氣減少,缺乏傳播聲音的介質
空氣減少,聲音傳播時所受阻礙變小
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
同學們認為音樂教室的回聲太大,想請學校進行整修。下列建議何者可提供給學校參考?
將教室四周牆壁處理平整且光滑
將教室內的書櫃和擺設都清空
將教室的天花板設計成對稱的形狀
在教室的窗戶上裝設窗簾或絨布幔
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