Question

why do the poles (regions beyond the Arctic and antarctic circle ) experience 6 months day and 6 months night

Answer 1

Antarctica has six months of daylight in its summer and six months of darkness in its winter. The seasons are caused by the tilt of Earth's axis in relation to the sun. The direction of the tilt never changes. But as the Earth orbits the sun, different parts of the planet are exposed to direct sunlight.