Sound

·      You need vibrations and something for the sound to travel through. Vibrations create sound. The perception of sound in any organism is limited to a certain range of frequencies. Hunams hear these frequencies differnetly than dogs or other animals hear them. The ear is the organ used to detect sound. Sound waves are transmitted through the outer ear to a nerve where they are registered as sound.

Sound travels in waves. What the waves have to travel through is what determands the sound. The density, temperature, and distance are all factors that effect sound waves.