

12 Dec TIMSS - Production and Behaviour of Sound
Presentation
•
Science
•
6th Grade
•
Practice Problem
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Easy
Fong I Lou
Used 1+ times
FREE Resource
4 Slides • 3 Questions
1
12th December 2022
2
Some text here about the topic of discussion
relate common physical phenomena (i.e. vibrating objects and echoes) to the production and behaviour of sound
3
簡單來說,聲音就是「有東西在振動」
振動會產生聲波並透過介質(固體、液體、氣體)傳播,進而被人體所感知。
聲音傳播的速度是:(最快)固體>液體>氣體(最慢)
4
音反射
聲波在行進中遇到障礙物(例如牆壁)無法被吸收時就會被反彈
過大或過多的反射音就會形成「迴音」
當屋內都是剛性材質(玻璃或磚牆)而少有吸音材質時最容易有此現象。
5
Fill in the Blanks
物件
Type answer...
6
Multiple Choice
敲打哪一塊屬片會發出較高音?
紅色
黃色
綠色
紫色
7
Multiple Choice
小美有四支金屬棒,她敲打其中兩支。如果第二支所發出的音調比第一支所發出的高,小美敲打的是哪兩支金屬棒?
第一支: A
第二支: B
第一支: B
第二支: C
第一支: C
第二支: D
第一支: D
第二支: A
12th December 2022
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