What causes change in seasons?

Answer 1

The Earth's axis of rotation is tilted by about 23.5 degrees from the perpendicular to its orbital plane. This means that at different times in its orbit, one pole or the other is angled more toward the Sun. The result is that different parts of the globe receive varying amounts of sunlight during the year, creating the seasons.

When the northern hemisphere is tilted toward the Sun (March to September), the days are longer and the sunlight more direct, and the higher temperatures peak in June and July, which are summer months.

When the Southern Hemisphere is tilted toward the Sun, it experiences warmer temperatures, with December and January being mid-summer (while it is winter in the northern hemisphere).

Spring and Fall are the transitional months, with temperature becoming either warmer or cooler respectively. While it is spring in one hemisphere, on the opposite side of the equator it is fall (autumn).

Answer 2

The rotation of the Earth

Answer 3

The tilt of the Earth on its axis causes the seasonal changes in the Earth's weather patterns. Because of the angle of the tilt (23.5 degrees) different parts of the earth are pointing the sun and getting the rays of sunlight more directly.