How does the tilt of the earths axis and its movement around the sun play a part in the changing of the seasons in the northern hemisphere?
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To understand how the tilt of the Earth's axis and its movement around the sun influence the changing of seasons in the northern hemisphere, consider the following explanation:
1. The Tilt of the Earth's Axis: The Earth's axis is tilted at an angle of approximately 23.5 degrees. This tilt remains fixed as the Earth revolves around the sun.
2. Movement of the Earth Around the Sun: The Earth follows an elliptical orbit around the sun, completing one revolution in approximately 365.25 days (one year). This movement causes different parts of the Earth to receive varying amounts of sunlight throughout the year.
3. Relationship between Tilt and Seasons: As the Earth orbits the sun, the tilt of its axis determines the angle at which sunlight hits different parts of the Earth's surface. This angle determines the intensity and duration of sunlight, leading to the changing seasons.
4. Northern Hemisphere Summer: During the summer season in the northern hemisphere, the North Pole is tilted towards the sun. This results in longer daylight hours and the sun appearing higher in the sky. The increased sunlight leads to warmer temperatures and the onset of summer.
5. Northern Hemisphere Winter: In the winter season of the northern hemisphere, the North Pole is tilted away from the sun. As a result, daylight hours become shorter, the sun appears lower in the sky, and sunlight is spread out over a larger area. The decreased sunlight leads to colder temperatures and the arrival of winter.
6. Northern Hemisphere Spring and Autumn: During the spring and autumn seasons, the tilt of the Earth's axis causes neither the North Pole nor the South Pole to be inclined towards or away from the sun. This results in roughly equal daylight hours and moderate temperatures, marking the transition between winter and summer.
In summary, the tilt of the Earth's axis and its movement around the sun cause the changing of seasons in the northern hemisphere. The angle at which sunlight strikes the Earth's surface, determined by the tilt and position of the Earth, influences the duration and intensity of sunlight, and subsequently affects the temperature and climate experienced in different seasons.