Earth Sciences 1023A/B Lecture Notes - Lecture 1: Angular Momentum, Gravitational Acceleration
1 Mar 2015
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T or f: you weigh the same everywhere on the earth. F: you weigh more at the poles than at the equator. Gravitational acceleration at the poles is greater than at the equator due to shape and rotation of our planet. T or f: the moon is moving away from the earth. T: angular momentum in the earth-moon system is being transferred from earth to the moon. Consequently, our days are getting longer and the moon"s orbital radius is increasing. T or f: the earth"s magnetic field (geomagnetic field) is entering a period of. The earth"s magnetic field has reversed polarity many times throughout its geological history. It has been steadily decreasing in intensity during the past millennium. T or f: a large earthquake can cause the earth to ring like a bell. T: rare great earthquakes (m > 8) produce free oscillations of the earth that can last for several days.
