
南一國中自然8上ch3-2
Authored by 南一 自然
Science
8th Grade
Used 16+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
小鳳用力揮動手臂但卻無法產生聲音,原因是:
振動幅度太小
振動頻率不規則
振動頻率太慢
沒有介質傳遞聲音
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
聲波在傳遞時,空氣分子的振動方向和波的傳遞方向是相同的,我們把這種波稱為什麼?
橫波
縱波
非力學波
電磁波
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
敲擊音叉產生振動而發出聲音時,下列何種情形下聲音會停止?
用手握住音叉
用木槌敲擊音叉
將音叉放入水中
改變音叉的頻率
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
將一頻率為100赫茲的振動中之音叉浸入水中,若空氣中聲速為340公尺/秒,水中聲速為1500公尺/秒,則聲音在水中的頻率為多少赫茲?
0.34
15
100
150
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
在冬天乾燥無風操場上,戶外溫度為15℃,大雄向著遠處的小明喊叫,此時大雄的喊叫聲音速度約為:
331公尺/秒
340公尺/秒
346公尺/秒
355公尺/秒
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
某艘海底探測船的聲納發射聲波至海底,經過5秒後,接收到由海底反射回來的聲波。假設當時海水中的聲速為1500公尺╱秒,則探測船至海底的距離為多少公尺?
1500
3000
3750
7500
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
有關波的傳播,下列敘述何者正確?
可傳遞能量與介質
只傳遞能量,不傳遞介質
只傳遞介質,不傳遞能量
傳遞能量、介質與否,必須視介質種類而定
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