The density of an object which sound is trave;ing through
The object that produces sound waves
The velocity at which a sound travels
A sound wave that has been reflected
The amount of times something occurs
The amount of time it takes to complete one cycle of vibration
How high a tone is
A human's ability to hear
The softest sound a person can hear
Having problems with hearing properly
A structure inside of the ear that sends sound signals to the brain
A tube that connects the ears with he pharynx for ventilation, protection, drainage and pressure equalisation