Question

seasons - the earths orbit
describe the changes in the earths seasons as the earth orbits the sun.

Explanation:

The Earth's seasons change due to its orbit around the Sun and its axial tilt. As the Earth moves in its orbit, different parts of the Earth receive varying amounts of sunlight. When the Northern Hemisphere is tilted towards the Sun, it experiences summer (longer days, more direct sunlight). As the Earth orbits further, the tilt changes relative to the Sun. For example, when the Northern Hemisphere is tilted away, it has winter (shorter days, less direct sunlight). The Southern Hemisphere's seasons are opposite. Spring and autumn occur during the transitional periods of the Earth's orbit when the tilt is neither towards nor away from the Sun in a extreme way for a particular hemisphere.

Answer:

The Earth's seasons change because of its orbit around the Sun and axial tilt. When a hemisphere (e.g., Northern) is tilted towards the Sun, it has summer (more direct sunlight, longer days). As the Earth orbits, if that hemisphere tilts away, it gets winter (less direct sunlight, shorter days). The opposite occurs in the other hemisphere (e.g., Southern). Spring and autumn are transitional periods in the orbit when the tilt is not extremely towards or away for a hemisphere.