This document discusses hearing tests used to differentiate between conductive and sensorineural deafness. It defines deafness and the two types of hearing loss. Conductive deafness is caused by issues transmitting sound in the outer or middle ear, while sensorineural deafness impacts the inner ear or auditory nerve. Tests described include the Weber test using a tuning fork on the head to identify louder perception on the blocked or impaired side for conductive issues, and the Rinne test comparing air conduction to bone conduction to identify normal hearing or conductive loss based on duration of sound perception. Videos are provided to demonstrate administering the tests.