What causes sesons?

Answer 1

The Earth is tilted on its axis. Summer occurs when one hemisphere, either the northern hemisphere or the southern hemisphere, is tilted towards the Sun.Winter occurs when one hemisphere, either the northern hemisphere or the southern hemisphere is tilted away from the Sun.A common misconception is that the seasons have to do with the Earth being closer to the Sun either due to the elliptical nature of its orbit or the tilt of the axis. Neither of these factors contributes to the seasons in any meaningful fashion. In fact, for those living in the Northern Hemisphere, we have summer when the Earth is furthest from the Sun.While it is true that there are more hours of daylight in summer time, this is a RESULT of tilt of the axis of the Earth and is NOT the reason for the seasons.