Page 1 - Competency Based Worksheet-Sound

SAI INTERNATIONAL SCHOOL

Class 8

Competency Based Worksheet

Subject- Physics
Ch. - Sound

1. Which of the following is not a characteristic of a musical sound?
a) Loudness
b) Pitch
c) Noise
d) Quality
2. The voices of men, women, and children are different due to differences in:
a) Larynx
b) Lungs
c) Vocal cords
d) Windpipe

3. Two sound waves have the same pitch and loudness, but their quality may be different
due to differences in:
a) Frequency
b) Waveform
c) Amplitude
d) Time period

4. Which property of sound determines how loud or soft it is?
a) Frequency
b) Amplitude
c) Wavelength
d) Speed

PICTURE-BASED QUESTIONS
5. a) Identify "noise" and "music" from the graphs given below.
b) Write two differences between them.

6. a) Mark the wavelength and amplitude on the given sound wave diagram.
b) Also, define these two
terms.