Details Title: CSCC Geology 101 Description: Terms for Geology 101 at Columbus State Community College Total Flash Cards: 13 Created: 02/03/2009 05:15:33		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Geology Flashcards
Cards in this set: Term Solstice Definition December 21/22, June 21/22 Term Equinox Definition March 21/22, September 21/22 Term Eccentricity Definition Shape of the earth's orbit. Elliptical at the present. Term Obiquity Definition Tilt of the earth on its axis. 23.5 degrees at the present. Term Precession Definition The wobble of the earth on its axis. Term Size and age of the earth Definition 4.56 billion years 25,000 miles in circumference Rotates on its axis at about 1000 mph Revolves around sun at 67,000 mph Term Latitude Definition Run east and west, but measure north and south. Columbus- 40 degrees N Latitude Term Longitude Definition Run north and south, but measure east and west. Columbus is at 83 degrees W Longitude Term Crust Definition 12-70 km thick Continental is less dense than oceanic Term Mantle Definition 70-2890 km thick Asthenosphere- about 100 km deep, where rocks start to turn plastic Term Outer core Definition 2890-5150 km deep Liquid iron and nickel Term Inner Core Definition 5150-6370 km deep Solid iron and nickel Responsible for earth's magnetic field Term Asthenosphere Definition 100 km deep Where rocks start to turn plastic Magma is produced here