Sound Is Produced By Vibrating Body
Chapter Name : Sound |
Sub Topic Code : 101_08_13_01_01 |
Topic Name : Sound Is Produced By Vibrating Body |
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Sub Topic Name : Vibration |
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Introduction
The strings of these instruments vibrate. When they do so, we hear it as sound. Thus sound is produced by vibrating bodies.
Pre-Requisites:
Types of Motion
Activity:
Fill a metal plate with water, now with a metal spoon tap on the rim of the plate. You will be able to hear the sound as well as see the vibrations in water
Real Life Question:
How are we able to hear the sound produced by musical instruments?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Vibration | Very fast To and Fro Motion |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Tuning Fork, Musical Instruments | All these produce sounds, where vibrations are visible |
Real life uses :
All musical instruments produce different sounds because of slight variation in the vibration of these strings.
Places to visit :
Music room- observe how the strings of the instruments vibrate, Children's Science Museum, Sound - Exhibit
Practical examples around us
| Examples | Explainations |
|---|---|
| Speech | The voice that we produce while speaking is due to vibrations of our vocal chords. |
What you learn in Theory:
Sounds are a result of vibrations on the medium in which they travel like air, water or metal.