The distance between the highest point of a fret and the strings. Different styles if playing may require different actions. Metal/shred will have lower ones while rock/blues will have higher ones. But a typical set up (measured from the top of the 17th fret to the bottom of each string) is around 4/64 if an inch.
The term "action" refers to the height of the guitar strings above the fretboard.
The action on a guitar is changed by adjusting the nut slot and saddle height.
fretbuzz is my assumption, you can get it on one fret or more than one, so raise the action (String elevation) and if it doesn't go away you have to bring it to a guitar shop as uneven or worn down frets really change the sound of the guitar. adjusting the action you will have to adjust the trussrod afterwards though , keep in mind.
Yes, the bridge of a guitar can alter the sound. If you change anything on a guitar it can change the overall tone of the sound it produces.
with a capo
It could be rust? Either way, you will want to change the strings. Sometimes the people at the guitar stores can change them for you if you dont know how.
Action refers to the height of the guitar strings from the fretboard. For High action the strings are farther away making it harder to press the strings down. Low action is the opposite.
take off all the old ones and than put new ones on, you may have to adjust the action and neck on the guitar depending on how drastic the string gauge swap is. but 90% of the time I find you dont have to do anything but change the action.
Practice
fretbuzz is my assumption, you can get it on one fret or more than one, so raise the action (String elevation) and if it doesn't go away you have to bring it to a guitar shop as uneven or worn down frets really change the sound of the guitar. adjusting the action you will have to adjust the trussrod afterwards though , keep in mind.
It can, but only fitting 5 strings to a neck designed for 6 will change the stresses on the neck and might cause the action and intonation to go out, possibly even damaging the guitar.
take it to a guitar shop
guitar hero - no change.
Yes, the bridge of a guitar can alter the sound. If you change anything on a guitar it can change the overall tone of the sound it produces.
Like a boss.
Fausto plays football.
how high the strings are to the body
Yes, but I'm pretty sure you can only change it for the Xbox360.
Banging a guitar will render it inoperable.