How does the tilt of Earths axis and its movement around the sun play a part in the changing of the seasons in the Northern Hemisphere

Answer 1

The tilt of Earth's axis is the main reason behind the changing of the seasons in the Northern Hemisphere. The Earth's axis is tilted at an angle of about 23.5 degrees relative to its orbit around the sun. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year.

During the Northern Hemisphere's summer, which occurs from June to September, the North Pole is tilted towards the sun. This means that the Northern Hemisphere is tilted towards the sun as well, resulting in longer days and more direct sunlight. The increased sunlight and longer days create warmer temperatures, leading to the summer season.

In contrast, during the Northern Hemisphere's winter, which occurs from December to March, the North Pole is tilted away from the sun. As a result, the Northern Hemisphere receives less direct sunlight, causing shorter days and cooler temperatures. The reduced sunlight and shorter days contribute to the onset of the winter season.

The changing of the seasons is further influenced by the Earth's movement around the sun in its elliptical orbit. The Earth is closest to the sun during the winter in the Northern Hemisphere, a phenomenon called perihelion, and farthest from the sun during the summer, known as aphelion. Despite the Earth's elliptical orbit, the tilt of its axis remains the primary determinant of the seasons.

Overall, the combination of Earth's axial tilt and its movement around the sun determines the amount and intensity of sunlight received by different parts of the Earth throughout the year, resulting in the changing of the seasons in the Northern Hemisphere.