Grade 8 Science : Sound - Part 4

Do you know that music is inculcated with a healing power? Music therapy is the use of music in order to uplift the physical, psychological and social well-being of individuals. This involves a series of activities like singing, listening to music, playing musical instruments, writing songs and etc. It is used to treat people who suffer from several physical and mental diseases and ailments. Music therapy plays a significant role in uplifting the quality of life where it improves the balance and the mentality. It also inculcates a lot of positivity in individuals.

 

Patients who suffer from depression, anxiety and many psychological disorders too are treated with music therapy. Moreover, individuals with learning and development disabilities, brain injuries and aging related conditions too are benefitted from this technique.  It is a great way of managing stress and it also supports cancer patients to cope up with the conditions. Music therapy provides spiritual happiness especially to those who are a part of the busy routine in life and it uplifts physical fitness as well. In the modern world, this incredible technique is used to coordinate muscle movement in sports, prepare patients for surgeries and heal patients upon completing their surgeries. Thus, music should be a part of everyone’s life right throughout and it will certainly ensure the health and well-being of people. 

 

 

Limits of hearing

 

Human ear is capable of detecting sound. The sound waves with high frequency and amplitude are highpitched and loud while those with a low frequency and amplitude are low pitched and quiet. Human beings can only hear a particular range of vibrations/ frequencies. Thus, it should be noted that they cannot hear the sound of any frequency. This particular frequency range is called the “limits of hearing”. The limits of hearing is 20 Hertz to 20000 Hertz. Thus, it is clear that the human ear is not sensitive to the sounds of the frequencies that are less than 20 Hertz (20 Hz) and those that are greater than 20000 Hertz (20000 Hz). This range varies in the case of other animals. For example, the dogs can hear the sounds of the frequency that are less than 20 Hertz or greater than 20000 Hertz. 

 

 

 

 

 

 

 

 

by Mekhala Egodawele

Photo source : Internet