Question

Describe with a activity sound waves are mechanical waves

Answer 1

AIM:
To prove that sound waves are mechanical.

MATERIALS REQUIRED:
an air tight container.
phone

METHOD:
First, take the container .
phone should be inserted into the container.
before inserting phone set ring tone in it.
you can hear the ring tone.
Next evacuate the air from the container .
You cannot hear the ring tone.

OBSERVATION:
thus sound waves are mechanical waves.