
國二上理化 Chap3_4 多變的聲音 2024 1021
Authored by Sone Wang
Physics
8th Grade
Used 2+ times

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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
關於聲音的敘述,下列何者錯誤?
Answer explanation
Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
音叉振動頻率為 f1 赫,發出聲音之頻率為 f2 赫,則 f1、f2 之大小關係為何?
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列哪些聲音長期接觸下來將對聽力產生不良影響?(甲)大型造勢晚會;(乙)鄉村的蟲鳴聲;(丙) Pub、Disco 的熱門音樂;(丁)工廠機器的運轉聲。
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
已知響度每增加 10 分貝,聲音強度增加為 10 倍,則 20 分貝的聲音強度是 0 分貝的多少倍?
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
坐在教室後面聽老師上課,感覺老師的聲音比較小,其原因是聲波傳至教室後面時,下列何者變小?
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
如附圖,同一時間內三種樂器所發出的樂音經示波器轉換所描繪的波形,下列哪一個樂器發出的樂音音調最高?
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
如圖,宏泰彈吉他時,用左手無名指按住弦線的 A 點,當他以右手撥動弦線的同時,左手無名指由 A 點快速的滑向 B 點。則宏泰的目的是想改變什麼以達到演奏的效果?
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