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We can measure the sound using ………
Sound level meter
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Okay!
Slow vibration makes …. (High/low) pitch.
Low
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Small vibration makes ….. (loud/soft) sound.
Soft
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Okay!
Loosen the string makes the pitch lower. True or False?
True
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Guitar is an example of wind instrument. True or False?
False
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We can muffle the sound that we don’t want to hear using …..
Ear defencer
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We can make a pitch louder by tightening the string in a string instrument. True or False?
True
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In building, we can use …… and ……… to muffle the sound.
Carpet and curtain
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Fast vibration makes ….. (high/low) pitch.
High
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Sound travels in …..
Vibration
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Weak vibration makes ….. (loud/soft) sound.
Soft
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Okay!
Big vibration makes ….. (loud/soft) sound.
Loud
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Okay!
Sound is produced when things …..
Vibrate
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Recorder is a wind instrument. True or False?
True
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Okay!
Vibrations make …..
Sound
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We play a string instrument by plucking it. True or False?
True
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Okay!
We can make sound louder using …..
Microphone, amplifier, sound system, speaker
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Thicker string produces higher pitch. True or false?
False
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Okay!
Hard vibration makes ….. (loud/soft) sound.
Loud
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Okay!
Muffle the sound means make the sound quieter. True or False?
True
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Okay!
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