Which of the following is one of the three factors that contribute to the periodic changes in earth temperature known as the milankovitch cycle
The three factors that contribute to the periodic changes in Earth's temperature known as the Milankovitch cycle are:
1. Eccentricity: The shape of Earth's orbit around the Sun changes over time from a more elliptical (higher eccentricity) to a more circular (lower eccentricity) shape, which affects the amount of solar radiation reaching Earth.
2. Axial tilt: The tilt of Earth's axis changes between approximately 22.1° and 24.5° over a cycle of about 41,000 years. This variation in axial tilt affects the distribution of sunlight throughout the year and the intensity of seasons.
3. Precession: Earth's axis also wobbles or precesses like a spinning top, completing a full precession cycle in about 26,000 years. This precession affects the timing of seasons with respect to Earth's position in its orbit.
Therefore, the correct answer is: Eccentricity.