This is why a compass needle turns towards the Earth's north pole, to align itself with the planet's magnetic field.
(This; is; why a compass needle turns towards the Earth's north pole) (a compass needle; turns; towards the Earth's north pole; to align itself with the planet's magnetic field)
This a compass needle
is turns
why a compass needle turns towards the Earth's north pole
towards the Earth's north pole to align itself with the planet's magnetic field