1) Sound could be either soft or loud. a) TRUE b) FALSE 2) The loudness of sound decreases as it moves nearer the observer a) TRUE b) FALSE 3) Echo is the term used for the sound that is reflected back to its source. a) TRUE b) FALSE 4) Noise is a sound that we want to hear. a) TRUE b) FALSE 5) Light is a type of energy made by vibrations. a) TRUE b) FALSE

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