宇宏用一只汤匙不停地敲打碗碟。哪项有关声音的说明是正确的?
四年级科学:单元六:声音

Quiz
•
Education
•
4th Grade
•
Hard
CHEE WEI SOON
FREE Resource
16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
声音是由按压所产生的
声音是由振动所产生的
声音是由弯曲所产生的
声音是由拉伸所产生的
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中的小女孩通过什么器官而发出声音?
肺
喉咙
嘴巴
声带
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
博荣在弹吉他时,发现振动的大小会影响声音的大小。根据博荣的观察,可作出什么结论?
振动越小,声音越小
振动越小,声音越大
振动越大,声音越小
振动越大,声音保持不变
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪种乐器可通过吹来产生声音?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
修文在一间空荡荡的房间呐喊,却听到回音。哪项最适合解释修文的情况?
声源来自房间
修文喊得太大声了
声音遇到粗糙的表面反射回来
声音遇到平滑的表面反射回来
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是生源?
声音的类型
声音的大小
产生声音的方式
发出声音的物体
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图中的孕妇如何得知肚子里孩子的情况?
回声
声呐
呐喊声
超声波
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