The difference between loudness and intensity of sound was established. Loudness being subjective while intensity is objective, measurable in specific units. The intensity of different sounds was presented, and shown that a difference between a sound of 10 Db intensity and one of 20 Db intensity was not twice as intense but 10 times as intense. Using a set of tuning forks, the specific pitch produced by each one was listened to and determined that each had a specific natural frequency. It was brought out that all elastic vibrating objects have a specific natural frequency and pitch. The loudness of a single tuning fork was disturbed and noted, it was then placed base down on the table top while vibrating and the increase in loudness noted. The reason for the increase was shown to be due to forced vibrations on the table top which was a larger surface area than the tuning fork, causing more air molecules to vibrate and a louder sound.