ADM 2302 Study Guide - Final Guide: Radiogenic Nuclide, Hadean, Orbital Period

• School: University of Ottawa
• Department: Administration
• Course: ADM 2302
• Professor: All

Document Summary

1. the andromeda galaxy is a spiral galaxy probably not very different from our own. 2. the earth"s global magnetic field is maintained by . 2a. a geodynamo that produces a field through a process closely tied to the circulation of fluid iron in the liquid layer of earth"s core. Neptune and uranus in orbit about the sun. 4. we have, since the apollo astronauts installed laser retro-reflecting mirrors on the surface of the moon, measured the increasing distance between earth and the moon and (hence) the lengthening orbital period . The fact that the moon is slowly retreating from the earth at about 3. 8 cm/yr is a consequence of: 4a. a transfer of angular momentum from the earth"s rotation to the moon"s orbital revolution as a consequence of tidal friction on the earth. The recession of the moon is caused by tidal friction. The larger the tidal friction, the greater the rate of moon recession.