Page 2 - Competency Based Worksheet-Sound
P. 2
7.
a) Which sound wave is louder? Justify your answer.
b) Find one similar property of both sound waves in the picture.
8. Identify the compression and rarefaction regions in the diagram given below.
9. The internal structure of the human
ear is shown in the diagram.
a) Identify parts 1 and 2.
b) What is the function of part 1
in the hearing process?
ACTIVITY-BASED QUESTIONS
10. In this activity, an electric bell is placed inside an
airtight glass bell jar.
a) When the air inside the jar is sucked out
and the bell is turned on, will you hear the
sound? Why?
b) What happens if the jar is filled with water?
Will the sound still be heard? Explain.
11.
Observe the given setup of a toy telephone.
a) In which case is the sound better audible?
b) Through which medium does sound travel in a string telephone?
c) What conclusion can be drawn from this activity?
