1) Sound travels in the form of sound waves produced by the vibration of the source. a) True b) False 2) Sounds don’t need a material/ medium for its propagation. a) True b) False 3) The sound travel faster in water than in hydrogen. a) True b) False 4) Gas – Solid – Liquid is the correct arrangement of materials where sound travels fastest to slowest. a) True b) False 5) Sound is vital in our daily lives; communication is among its uses. a) True b) False

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