Worksheet on Sound Class 3

Vibrating objects create invisible waves that travel through air to reach our ears as beautiful music and meaningful words! Young acousticians investigate how guitar strings make music, how vocal cords create speech, and how thunder follows lightning across the sky. This class 3 sound worksheet includes experiments making telephones from cups and strings, creating echoes in empty rooms, and discovering why voices sound different underwater. Students explore volume, pitch, and how sound travels through different materials at varying speeds. Download sound worksheet Grade 3 pdf for acoustic adventures.

1. Which of the following sounds is an example of noise pollution?

a) Birds chirping in a garden
b) Waves crashing on the beach
c) Rain falling on the roof
d) Construction machinery at a building site

Answer:  d) Construction machinery at a building site produces loud and disruptive noise, which can be categorised as noise pollution.

2. The sound produced by the following object is __.

a) soft and gentle
b) loud and powerful
c) high-pitched and squeaky
d) no sound at all

Answer: b) Loudspeakers are specifically built to amplify sound, making it louder and more powerful.

3. Which of the following is an example of a natural sound?

a)
b)
c)
d)

Answer: c) Rainfall is a natural occurrence and the sound of rain falling is a natural sound.

4. Judy is conducting an experiment on echoes. If she shouts in a wide-open space with no walls, what would she observe?

a) She will hear a loud echo.
b) She will hear a soft echo.
c) She will hear no echo at all.
d) She will hear multiple echoes.

Answer: c) In Judy's experiment, if she shouts in a wide-open space with no walls, there are no surfaces for the sound waves to bounce off and reflect back to her. As a result, she would not hear any echoes.

5. What can you do to protect your ears from loud noises?

a) Wear sunglasses
b) Cover your ears with your hands
c) Use headphones or earplugs
d) Close your eyes tight

Answer: c) Using headphones or earplugs can reduce the intensity of loud sounds and protect your ears from damage.