Page 24 - Science and Technology Std 3

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Look at the following pictures and then read the description
that follows.
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a b

c

Figure 1 Activities producing sound energy

Sound is a form of energy produced from vibrations of various
things. It is a means of communication. Sound spreads from its
source to all directions. Playing a drum, a whistle or a guitar

produces sound. When people talk to each other, they produce
sound. Also, when a hen is calling its chicks, it produces sound.
Some of the sources of sound energy include a flute, a piano,
a trumpet, a whistle, a drum, a guitar and a bell. We hear

sounds through our ears.

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PROPERTY OF UNITED REPUBLIC OF TANZANIA GOVERNMENT
Ministry of Education, Science and Technology
Science and Technology 3.indd 17 03/08/2019 11:01