Properties means something belong to someone or something.
Sound can travel around corners. Sound can travel in every direction. Sound is louder when it is closer to the source.
Mr Wong proved sound could travel around corners. He clapped around the corner with his meter and the sound was record on the meter.
Mr Wong proved that sound can travel in every direction. Mr Wong made sound around the source with his phone. The meter recorded the sound at dB.
Lastly, Mr Wong proved sound louder when closer to the source. Mr Wong had two meters on each side of the room. Mr Wong clapped next to one meter. One meter record a small decibel and the other recorded a bigger decibel.
LI: To observe the properties of sound.
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