
單元8 聲波的產生與傳播
Authored by Carrie Kan
Physics
7th - 9th Grade
Used 8+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
月球之所以被稱為「寂靜的星球」,是因為下列何種原因?
月球上的聲音被月球吸掉
月球上缺少傳聲介質
月球上的月光仙子有魔力
月球引力太小
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列何種現象可證明物體發出聲音,是由於物體振動的關係?
蚊子展翅而飛時所發出的聲音
鼓面上的米粒會因鼓被敲打而發出聲音時,米粒隨著鼓面的振動而上下跳動
撥動橡皮筋時,橡皮筋來回振動而發聲
以上皆是
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
關於聲波的敘述,下列何者錯誤?
溫度愈低,聲波傳播速率愈慢
水上芭蕾選手的頭部潛入水中時也可以聽到空氣傳來的音樂
吉他絃振動愈快,聲波傳播速率一樣快
重敲和輕敲琴鍵時,聲波傳播速率不一樣
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如圖所示,用細線懸保麗龍球和正在發聲的音叉相接觸,小球會不停的跳動。當音叉發聲停止後,小球跳動的現象就隨之停止。此現象可說明下列哪件事?
音叉發出聲音時,音叉正在振動
保麗龍球受到靜電力
音叉配合保麗龍球就發出聲音
保麗龍球受到重力
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
有關聲音在空氣中傳播的特性,下列敘述何者正確?
氣溫升高聲音傳播速度愈慢
溼度愈高聲音傳播速度愈快
空氣中的聲音是橫波
聲波的傳播方向與空氣分子的振動方向互相垂直
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
在奧運會中有水中芭蕾的比賽項目,則舞者在水中能聽到音樂聲嗎?
能,因為水可以當作傳聲的介質
能,因為音樂聲可以不經由介質傳遞
不一定,要視水的溫度而定
不能,因為水不可以當作傳聲的介質
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
電鈴在真空鐘罩內振動,若將空氣慢慢注入鐘罩內,電鈴的聲音會慢慢地如何變化?
漸小
消失
漸大
不變
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