1) How we can here each other? a) Vribrations b) By talking c) hear your frend 2) Does vribation ise every day? a) no b) yes 3) Thoes sound energy is slowed or fast then light? a) Is much slower b) Is much faster 4) How many miles thoes the sound energy go? a) 20 miles per second b) 80 miles per second c) 1 mile per second 5) Does sound is pawerfull to brake a glass of vine? a) Yes b) No

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