The Milankovitch cycles change the distance of the Earth from the Sun, the tilt

Question

The Milankovitch cycles change the distance of the Earth from the Sun, the tilt of Earth's axis, and the direction of the tilt of the Earth. Together, these changes alter the Earth's temperature and seasonality which initiated the comings and goings of the Ice Ages. Match the following Milankovitch cycles to the proper definition. Orbital eccentricity lChoose ] Axial Procession IChoose ] Axial Tilt ?[Choose ] The shape of the Earth's orbit around the Sun (round vs. eliptical). The amount that the Earth is tilted The wobble of the path the Earth takes around the Sun The direction of the tilt of the Earth's axis (toward the North Star or VegaMa) The process by which the axis tilts Choose I

Explanation / Answer

(1 ) (a)The first of the three Milankovitch Cycles is the Earth's eccentricity. Eccentricity is, simply, the shape of the Earth's orbit around the Sun.

(2) (d) The second of the Milankovitch Cycles is Earth's precession. Precession is the Earth's slow wobble as it spins on the axis. This wobbling of the Earth on its axis can be likened to a top running down, and beginning to wobble back and forth on its axis. The precession of Earth wobbles from pointing at Polaris (North Star) to pointing at the star Vega. "the direction of the tilt of the earth axis "

(3)(b) Axial tilt, third of the Milankovitch Cycles, is the inclination of the Earth's axis in relation to its plane of orbit around the Sun. "the amount that earth is tilted ". Today the Earth's axial tilt is about 23.5 degrees, which largely accounts for our seasons.

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