UNIT 7. SOUND (REVIEW SA)

How high or low a sound is called .................... .

• volume
• loudness

• instrument

• pitch

A form of energy that we can hear and it is caused by vibration is called ............... energy.

• voice

• noise

• sound

• music

We can hear sound from the following activity in the picture, EXCEPT ............... .

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An example of loud sound is ... .

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Loudness of sound is also called as .............. of sound.

• vibration

• volume

• pitch

• noise

A type of musical instrument that produce sound when it is hit, shaken, or rubbed is ............... .

• wind

• air

• string

• percussion

An example of low-pitched sound is ................. .

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The two percussion instruments are ............... and ............... .

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Sound travels fastest through ................. .

• solid

• liquid

• gas

• vacuum

The bottle flute that produces the lowest-pitched sound is ................... .

• blue
• green
• yellow
• purple