Science: Sound

State Council of Educational Research and Training, Tamil Nadu (2020) Science: Sound. [Teaching/Learning Resource]

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Sound is a form of energy which produces sensation of hearing in our ears. Some sounds are pleasant to hear and some others are not. But, all sounds are produced by vibrations of substances. These vibrations travel as disturbances in a medium and reach our ears as sound. Human ear can hear only a particular range of frequency of sound that too with a certain range of energy. We are not able to hear sound clearly if it is below certain intensity. The quality of sound also differs from one another. What are the reasons for all these? It is because sound has several qualities. In this lesson we are going to learn about production and propagation of sound along with its various other characteristics. We will also study about ultrasonic waves and their applications in our daily life

Item Type: Teaching/Learning Resource
Program: A publication under Free Textbook Programme of Government of Tamil Nadu
Learning outcomes: After completing this lesson, students will be able to � understand the properties of sound. � know that sound requires a medium to travel. � understand that sound waves are longitudinal in nature. � explain the characteristics of sound. � gain knowledge about reflection of sound. � explain ultrasonic sound and understand the applications of ultrasonic sound.
Access: Open
Uncontrolled Keywords: Physics
Subjects: Science General
Curriculam Level: 4. Junior Secondary
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Depositing User: COL Staff
Date Deposited: 11 Apr 2021 05:46
Last Modified: 22 Apr 2021 00:46

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