PES 1050 Midterm: Exam 2 Study Guide

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31 Jan 2019
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Pes 105 general astronomy i - exam 2 study guide. Know the source and effects of the earth"s magnetic field. Radioactive decay can be used to estimate the age of the earth. Precession (top-like rotation of earth"s axis over 26000 years) is caused by the sun and moon acting on the equatorial bulge. There is little or no evidence of volcanic activity on the moon, though the inside of the moon is believed to have been molten at one time. Know the definitions of the international date line and the prime meridian, and their longitudes. Know the characteristics and distinctions between the roman (julian) calendar, the gregorian calendar, the julian.