This is my guitar ↑. It is acoustic, not electric.
It cost $99 at Guitar Center.
It has 6 strings. This is how it makes music:
The vibration of the strings causes the soundboard (top) of the guitar to vibrate in a similar manner. The vibration of the soundboard then causes the air inside (and around) the guitar to vibrate...the vibrations of the air is what you hear and what you hear is known as a sound wave or sound waves.
My 14 year-old cousin knows how to play; and he's going to teach me a little bit.