Page 128 - Primary Six Notes

Different living things produce sound in different ways:

 Mammals produce sound by the vibration of their vocal

cords in the larynx. In addition to this, humans change the

tongue and the lips to modify the sound.

 Birds sing by the help of their rings of cartilage.

 Bees and mosquitoes produce sound by flapping their wings

rapidly.

 Crickets produce sound by rubbing their wings against the

hind legs.

MUSICAL TOOLS

All musical instruments are materials used to produce

sound.

They are used to accompany or 1 give a beat to the flow
1
of music. 1 1

Groups of musical instruments.

There are basically three categories of musical

instruments basing on how they produce

sound, how they are played and their fea- A

tures.

They are classified into three: String instru-

ments, Wind instruments, Percussion instru-

ments