Sound is created by shaking things. Sound has 3 properties , which are:
Sound can travel around corners. Sound was recorded around a corner from the source
Sound travels in all directions. As Mr Wong beeped his phone in all directions, the sound meter was around the same decebals.
Sound dissipates ( gets quieter ) as it travels. The decibels on a sound meter closer to you are louder than one further away from you.
LI: to observe the properties of the sound
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