Seasons change in different parts of the world primarily due to the tilt of the Earth's axis as it orbits the sun. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year, which in turn leads to the changing of seasons. The four main seasons - spring, summer, autumn, and winter - occur at different times depending on the location in relation to the equator. Countries closer to the equator typically experience less variation in temperature and have a wet and dry season instead of distinct four seasons.
