GEO 103 Study Guide - Final Guide: Lava Dome, San Andreas Fault, Oceanic Crust
Document Summary
Geology final exam study guide: distance light travels in a year i. 9. 5 trillion kilometers: examples of light years include, moon 1. 3 light-seconds (~237,000 miles) away ii. Sun 8. 3 light-minutes (~93 million miles) away. Next nearest star (alpha centuri) 4. 3 light years away iii. iv. Edge of the visible universe is >13 billion light years away: layers of earth, physical properties. The crust: continental crust - thicker, low density, felsic, oceanic crust - thinner, high density, mafic ii. The mantle: 82% of the earth"s volume, ultramafic rock peridotite iii. The core: rich in iron, radius estimated 3,471 km, outer core is liquid. Inner core is solid: convergent boundaries, plates move together and cause subduction and collision, three types of convergent relations i. Continent to continent collision: forms mountain ranges, ocean to ocean, causes subduction and island arcs iii. Streak - the color result of scratching mineral against an object. Cleavage - tendency to break mineral along planes.
