Activity 13.1 Class 8 Science Chapter 13 Solution

Activity 13.1 Class 8 Science Chapter Sound

 In this post, you will find NCERT Science Class 8 Chapter 13 activity 13.1 and after reading this, you can understand the meaning of sound, characteristics of sound, propagation of sound, properties of sound, and types of sound waves. You should also go through activity 13.2 of chapter 13.

You are suggested to study NCERT activity 13.1 class 8 science explanation with a conclusion so that you can attempt questions based on activity 13.1 class 8 science.

Activity 13.1 Class 8 Science

  ·     Take a metal plate (or a pan).

   ·     Hang it at a convenient place in such a way that it does not touch any wall.

  ·     Now strike it with a stick.

  ·     Do you hear a sound?

  ·     Touch the plate or pan gently with your finger.

  ·     Do you feel the vibrations?

  ·     Again, strike the plate with the stick and hold it tightly with your hands immediately after striking.

  ·     Do you still hear the sound?

  ·     Touch the plate after it stops producing sound.

  ·     Can you feel the vibrations now?

Observation and Explanation 

When a metal plate or pan is struck with a stick, it starts vibrating and produces sound. We can easily hear the sound.

Yes, we can feel the vibration when touching the metal plate or pan after striking.

 When we strike the plate again and hold it with our hand tightly, we can not hear sound because this time the plate is not vibrating.

Now we strike the plate again, and it starts vibrating and producing sound. this time we don’t touch it. When the plate stops producing sound, we touch it. We cannot feel any vibrations.

Conclusion 

This activity shows that a vibrating body or object produces ‘sound’. Without vibrations, no sound is produced.

Related Topics

1. Activity 13.3

2. Activity 13.2