The Earth spins on its axis but does not change
direction of its axis as it revolves around the
sun.This means that, for part of the year, the
north pole is pointed away from the sun and so in
perpetual shadow, while the south pole is pointed
toward the sun, and thus in perpetual daylight.
During the opposite time of the year, although the
Earth's tilt hasn't changed, the position of the
sun relative to the Earth has, so the situation is
reversed. Away from the poles, the effects are
less extreme, but nonetheless, the days are longer
in the summer than in the winter and the sun is
higher in the sky, and one hemisphere's summer is
also the other's winter and vice-versa.
From March to September, the northern
hemisphere gets more light, and the southern
hemisphere gets less.From September to March, it's
the other way around.
Click Here to return to the search form.