Introduction Of Sound

Intensity of Sound
Sounds of drum, rickshaw, trains whistle, donkey, etc. are very a loud. On the other hand, the sounds of chirping of birds, rustling of laves, ticking of clocks are soft. The loudness of a sound is related to its intensity. Loud sounds have high intensity (Figure 8.2) and soft sounds have low intensity (Figure 8.3) Objects vibrating strongly produce loud sounds and objects vibrating slowly produce soft sounds.
  
                       Figure 8.2 Objects producing high/loud sounds
   
Figure 8.3 Objects producing soft/pleasant sounds