It's because of the tilt and the seasons and the the way on the earth it's located. During the summer it has long days of sun and some days have 24 hours of sun and in winter there might be only 3 hours of sun and total darkness.
There are two types of the Continental plate margins as the active and the passive and the active margins are those associated lithosphere plate boundaries and these are a transform margins and high tectonic activity zones that include the volcanoes and the earthquakes.
