Influence On The Earth
Because of the axial tilt of the Earth (often known as the obliquity of the ecliptic), the inclination of the Sun's trajectory in the sky (as seen by an observer on Earth's surface) varies over the course of the year. For an observer at a northern latitude, when the northern pole is tilted toward the Sun the day lasts longer and the Sun climbs higher in the sky. This results in warmer average temperatures from the increase in solar radiation reaching the surface. When the northern pole is tilted away from the Sun, the reverse is true and the climate is generally cooler. Above the arctic circle, an extreme case is reached where there is no daylight at all for part of the year. (This is called a polar night.) This variation in the climate (because of the direction of the Earth's axial tilt) results in the seasons.
Read more about this topic: Earth's Orbit
Famous quotes containing the words influence on, influence and/or earth:
“Important as fathers are, their influence on children shouldn’t be exaggerated just because they were ignored so long. There is no evidence that there is something especially good about fathers as caretakers. There are no areas where it can be said that fathers must do certain things in order to achieve certain outcomes in children. The same goes for mothers.”
—Michael Lamb (late–20th century)
“If the dignity as well as the prestige and influence of the United States are not to be wholly sacrificed, we must protect those who, in foreign ports, display the flag or wear the colors of this Government against insult, brutality, and death, inflicted in resentment of the acts of their Government, and not for any fault of their own.”
—Benjamin Harrison (1833–1901)
“It was a Sunday afternoon, wet and cheerless; and a duller spectacle this earth of ours has not to show than a rainy Sunday in London.”
—Thomas De Quincey (1785–1859)