Page 28 - Science and Technology Std 3

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Study the following picture and investigate how sound travels
through the iron rod.
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Figure 4 Transfer of sound through the iron rod

Figure 4 shows a girl hitting an iron rod. The boy is listening
from the other end.

Activity 5 Investigate how sound travels through an
iron rod

Materials A piece of iron rod, a table and a ruler

Procedure

(i) Put a long piece of iron rod on a table.
(ii) Tell your friend to listen from one end.

(iii) Hit the rod with a ruler from the other end.

(iv) Ask him/her what he/she hears.

(v) Then ask your friend to hit the iron rod with a ruler on

one end.
(vi) Listen from the other end of the iron rod.

(vii) What do you hear?

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PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Science and Technology 3.indd 21 03/08/2019 11:01