1. The Earth's axial tilt, known as the obliquity of the ecliptic, at approximately 23°26', results in the phenomenon where seasons in the Northern and Southern Hemispheres are opposite.2. This axial tilt causes the Sun to move between the Tropic of Cancer and the Tropic of Capricorn, a motion known as the solstice. When the Sun is directly over the Tropic of Cancer, it is summer in the Northern Hemisphere and winter in the Southern Hemisphere; conversely, when it is over the Tropic of Capricorn, the seasons are reversed.3. The Sun's direct passage over the equator marks the transition from spring to autumn in the Northern Hemisphere and from autumn to spring in the Southern Hemisphere, completing the cycle of opposite seasons.4. The Northern Hemisphere encompasses a majority of North America and Europe, with land accounting for 39.3% and water for 60.7%. The winter season in the Northern Hemisphere runs from December to February, while the summer months are from June to August, opposite to those in the Southern Hemisphere.5. The most prevalent climate types in the Northern Hemisphere's temperate regions are temperate continental and subarctic climates.6. The Southern Hemisphere includes Antarctica, most of Brazil, Australia, and parts of South America and Oceania. Its summer and winter are opposite to those of the Northern Hemisphere.7. In the Northern Hemisphere, winter begins with the winter solstice (around December 22) and ends with the vernal equinox (around March 20); summer starts with the summer solstice (around June 21) and concludes with the autumnal equinox (around September 21).8. The northernmost point of the Northern Hemisphere is the North Pole, which is the top of the Arctic Circle. The Arctic experiences frigid winters and cool summers, with temperatures generally low.9. In the Arctic winter, there are periods of continuous darkness known as polar night; in the summer, there are periods of continuous daylight called polar day.10. The temperate zone in the Northern Hemisphere lies between the Arctic Circle to the north and the Tropic of Cancer to the south, characterized by moderate temperature changes and fewer extreme weather events.11. The tropical region in the Northern Hemisphere is located between the Tropic of Cancer and the equator, with a climate that is typically hot year-round, with rainy summers and dry winters.12. In the Northern Hemisphere, large objects moving through the air experience the Coriolis effect, causing them to rotate clockwise. This is also true for the currents in the North Pacific and North Atlantic Oceans. In the Southern Hemisphere, the direction of this rotation is reversed.詳情