Show using figures two sounds of different pitch but same loudness
Answers
Answer:
Everyday we hear sounds from various sources like humans, birds, bells, machines, vehicles, televisions, radios etc. Sound is a form of energy which produces a sensation of hearing in our ears. There are also other forms of energy like mechanical energy, heat energy, light energy etc. We have talked about mechanical energy in the previous chapters. You have been taught about conservation of energy, which states that we can neither create nor destroy energy. We can just change it from one form to another. When you clap, a sound is produced. Can you produce sound without utilising your energy? Which form of energy did you use to produce sound? In this chapter we are going to learn how sound is produced and how it is transmitted through a medium and received by our ear.
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Whereas loudness depends on the energy of the wave. In general, the pitch is the reason behind the difference in voice quality of different individuals. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.
Example:
A bass drum, thunder, and a man's deep voice are low- frequency sounds. A high-pitched whistle, squeal, and a child's voice are high-frequency sounds. If a sound is soft, it has a low intensity.