The number of precession periods in inclination change of one cycle of Earth’s axis, eccentricity variation of Earth’s orbit, and number of periods or period fractions of precision of Earth’s axis, nod, and change in shape of Earth’s orbit in time span given in figure 2.11b and also identify which one has more influence on changes plotted in figure 2.11.

Question

Mars is 1.5 times as far away from the Sun as Earth. Earth’s axis is tilted at 23.5o compared to the ecliptic. The axis of Mars is tilted at 25o compared to the ecliptic. The atmosphere on Earth is 100 times as thick as the atmosphere on Mars. Which of the following statements is true? 1.)Mars is so cold that the water there is ice, while Earth does not have any ice 2.)When it is summer in Earth’s northern hemisphere, it is winter on Mars’ southern hemisphere 3.) Earth has seasons, Mars does not 4.) All of the water on Mars is frozen, while Earth has water in solid, liquid and gas form

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Chapter 2, Problem 14P

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The number of precession periods in inclination change of one cycle of Earth’s axis, eccentricity variation of Earth’s orbit, and number of periods or period fractions of precision of Earth’s axis, nod, and change in shape of Earth’s orbit in time span given in figure 2.11b and also identify which one has more influence on changes plotted in figure 2.11.

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