如附圖是臺中科學博物館千里傳音示意圖,圖中可表示出聲音的哪一個現象?

國二上理化Chap3-3 聲波的反射與超聲波 2024 1019

Quiz
•
Physics
•
8th Grade
•
Medium
Sone Wang
Used 8+ times
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
反射
折射
漫射
擴散
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
回聲與原聲到達聽者耳朵的時間差,必須間隔多少秒以上,聽者才容易分辨原聲與回聲?
0.01
0.1
1
10
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
有關原聲及回聲的比較,下列何者正確?
傳聲速率相同
原聲的頻率大於回聲的頻率
行進方向相互垂直
聲音的強弱相同
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列何者為超聲波的應用?
利用紅外線望遠鏡可在黑暗中進行觀察
醫學上常用來觀察母體內胎兒的儀器
使用調音器協助樂器的調音
使用雷達觀測敵軍的動靜
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列關於回聲的敘述,何者錯誤?
回聲若與原聲重疊,則聲音會變得更響亮
空曠的地方亦有可能產生回聲,只是聲音較不響亮
柔軟或有孔隙的表面會吸收聲波,使聲波的回聲變弱
當聲波產生回聲時,我們的耳朵只能聽到回聲,無法聽到原聲
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
聲音的反射和反射面的性質相關,請問下列哪一個物體反射聲音的效果最差?
水泥牆
鋼板
絨布牆壁
壓克力板
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
蝙蝠飛行時,利用超聲波的回聲測知障礙物的位置,但其所發出的聲音我們卻聽不到,主要原因為何?
聲音太小
頻率太高
波長太長
聲速太快
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