Page 73 - Science Class 6 Times Publication

f. Sound produced from a source becomes fainter as it travels
away from the source. Why?

4. Answer these questions in detail:
a. Explain an activity which shows that production of sound
stops when vibration stops.
b. Describe an activity which shows that larger object produces
louder sound.
c. Describe an activity which shows that sound can travel
through solid.

d. Explain an activity which shows that sound travels in the
form of wave.

Project Work

1. Take 5 cups or glasses of different sizes. Keep them in a line.
Hit them with a small rod one by one. Listen to the sound and
note the loudness and sharpness of the sound.

2. Take a plank of wood and x nails at different distances. Put
rubber bands between the nails. Pluck the rubber band and
note the sharpness of the sound.

Times' Crucial Science and Environment 69 Book 6