Loudness of sound

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Member for

2 years 7 months
Age: 5-7
Level: 1
Language: English (en)
ID: 1774670
06/01/2022
Country code: TH
Country: Thailand
School subject: Science (1061951)
Main content: Sound (2011479)

Sound becomes quieter as it travels away from source.

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Loudness of sound

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