Where does sound come from?
A common question on the internet search engines is where does sound come from? This is a very simple question to answer once you understand what sound is and how it is formed.
Firstly sound is made up of vibrations.
The image above is a great way to understand where does sound come from. You cause a wave in water by wind or dropping a stone into it. Lets use the example of dropping a stone into a still pond and then the wave above is formed. Just like this wave a sound wave has a peak (high bit at the front) and a trough (the low bit left of the peak).
How loud the sound is depends on how big the stone is. This picture represents a small wave as the peak and trough are quite close to what we refer to as the base line, which is zero.
I go into more detail in various other articles on this site which you can see below. I don't want to overload anyone here.
So to sum up: where does sound come from?
Sound comes from energy being released in the form of vibrations. These vibrations are in the form of waves similar to the wave from dropping a stone into a still pond. The biggest the release of energy the bigger the vibration which makes our eardrums vibrate more and so we hear louder sounds.