Page 67 - Science Class 6 Times Publication

Guitar Madal Television Radio

A body can be vibrated by hitting, plucking, blowing, stroking, etc.

Activity 6.1
A vibrating object produces sound

Materials required: A bell, hammer or stick

Procedure

1. Take a bell and hit the bell with
metal stick to produce sound.

2. Touch the bell softly. What do you
feel?

Observation: You can feel vibration of the bell. When you hold it
tightly, the bell stops vibrating and production of sound stops.

Conclusion: Vibrating object produces sound.

If you pluck the strings of musical instruments like guitar or sitar,
you can feel the vibration of strings. You can see the vibration of
wings of mosquitoes when they  y.

Sound wave
Take a tuning fork. Strike the prongs of the tuning fork with a rubber
pad. Bring the prongs near your ear. You can hear sound. Touch the
prongs of the tuning fork, you can feel vibrations of the prongs.

Now, again strike the prongs of the tuning fork against rubber pad.
Touch the surface of the water with the vibrating prongs. You can see

Times' Crucial Science and Environment 63 Book 6