There can be. It all depends on your local league modifications to the laws.
U6 , U8 , U10 , U12, U20
here in southwick ma its 40 min
I lay out U10 and High School soccer fields. The U10 dimentions are 180x120 to make a square footage of 21600. The High School dimentions are 360x160 to make the square footage 57600.
Its called Offside, or being in an offside position. Being in an offside position, in and of itself, is not a foul. The foul occurs when the ball is PLAYED to the PERSON in an offside position. You can be "passive", not involved in the play, in an offside position and there is no foul.
The Cambridge Rules, written in 1848, first introduced the concept of offside.
being offside, and being tackled
Popsicle is the company sponsoring Soccer Day in Canada on CBC and has also sponsored U10 teams across Canada this soccer season.