Sound is a wave or vibration, True, False, Sound can't travel in solids., True, False, If you talk in a vacuum, you can hear yourself, True, False, Sound should move in any type of matter to travel, True, False, Human ears can listen all sound frequencies, True, False, The loudness of sound is measured in density, True, False, Human ears only have 2 parts, True, False, The eardrum is a piece of tightly spread skin, True, False, Their is no animal using the sound wave, True, False, Dolphins and cats are the same in the way they are using sound waves, True, False.

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