| Silence | Sound | Noise |
|---|---|---|
|
It is impossible to hear nothing
Why does silence not really exist?
|
What are we able to hear, a type of energy produced when something is in motion.
What is a sound?
|
Irregular!
Does noise have an irregular or regular wave?
|
|
People who know a lot about sound and silence
What are acoustic scientists?
|
Vibration.
What do objects in motion produce, to make sound?
|
Traffic on the road, low-flying aircraft, dogs barking, music blaring... are some of the noises
that pollute our cities.
What is a noise pollution?
|
|
An anechoic chamber,
What is is a room where no outer sound can come into?
|
Regular!
Do musical instruments have regular or irregular waves?
|
In decibels
How do we measure noise?
|
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