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The sound system consists of ... , ... , and ... .
the microphone, the amplifier, and the speaker
To make the sound more loud we use ...
the sound system
To measure the volume of sound, we can use a tool called ...
sound level meter
Baby crying is ... dB.
110
When we whisper we produce about ... dB sound.
20
The average sound that we can hear is ... dB.
85
dB means ...
decibel
Unit measurement of sound is ...
decibel
Construction workers use ... to prevent noise pollution.
ear mufflers
We use ... to prevent noise pollution at home.
curtains
Give me an example of noise pollution.
Examples of noise pollution are traffic, horns, etc.
The sound that is too loud, we called ...
noise pollution
To make different pitches in the flute, we need to ... some holes in the flute.
close
To make a beautiful sound on guitar, we need to ... the strings.
tune
We can make a flute produce sound by ... the flute holes.
blowing
We can make a guitar produce sound by ... the string.
plucking
Low-pitched sound is made by ... vibrations.
slow
High-pitched sound is made by ... vibrations.
fast
Soft volume is made by ... vibrations.
small
Loud volume is made by ... vibrations.
big
Sound is made by ...
vibration