REVIEW OF CHAPTER 7. SOUND

A form of energy that we can hear and it is produced by vibrations is called ....... .

• light

• sound

• electricity

• heat

Here are some things that we can do to produce sound, EXCEPT ........... .

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The sound is produced by .......... .

• silence

• quiet room

• vibration

• only human

When we play a guitar, which part of the guitar that vibrates and makes sound?

• the string

• the fingers

• the hole

• the air around the guitar

Part of our body that vibrates and creates sound when we talk is .......... .

• tongue
• vocal cords
• teeth
• lungs

If we hit this object, it vibrates and create sound.

The name of this object is ........ .

The loudness of sound is also called as ...... .

• pitch

• volume

• vibration

• speaker

The correct picture of sound meter is .......... .

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• 
• 
• 

The unit of measurement of the loudness of sound is .......... .

Exposure to sound above 85 dB for a long period can cause .......... .

• increased sensitivity to sound
• hard to breathe

• improved hearing ability
• hearing damage or loss