Flashcards in Milacovitch Cycles: Deck (3)
path of the Earth orbiting the sun as it is not fixed; it changes from almost circular to mildly elliptical. A cycle reverting from circular to ellipticial to circular again happens every 100,000 years.
earth spins on an axis for night and day at 23.5 degrees. Over 41,000 years, the tilt moves between 21.5 degrees and 25.5 degrees.