Magnetic lines of force connect the earth's north and south magnetic poles as show below: Compasses work because a magnetized compass needle will align itself with the earth's magnetic lines of force and point approximately north.
(a magnetized compass needle; will align approximately north; itself; with the earth's magnetic lines of force and point) (Magnetic lines of force; connect; the earth's north and south magnetic poles) Context(Magnetic lines of force connect,List([0, 31))):(Compasses; work; because a magnetized compass needle will align itself with the earth's magnetic lines of force and point approximately north)
Magnetic lines of force connect,List([0, 31))
a magnetized compass needle Magnetic lines of force Compasses
will align approximately north connect work
itself with the earth's magnetic lines of force and point
the earth's north and south magnetic poles
because a magnetized compass needle will align itself with the earth's magnetic lines of force and point approximately north