GEG 1301 Lecture Notes - Lecture 11: Continental Crust, Oceanic Crust, Plate Tectonics

• School: University of Ottawa
• Department: Geography
• Course: GEG 1301
• Professor: Denis Lacelle

Document Summary

Air rises & cools (frontal convection, convergence, orographic) Hydrological cycle (evaporation, precip, surface runoff, infiltration) Factors influencing climate (local + regional & effects they have) ~35% from lecture 10, ~27% from lecture 12 (a & b), 16% from 9, 13% from 11 and 7% from 8. Mc = earlier material, short/long on recent slides and key processes. Relative time: based on the principle of superposition, no numerical values. Absolute time: based on radiometric dating, give an accurate, numerical age. Heavier substances (iron) are found closer to the core. Sorted into rough layers of similar chemical composition and temperature. Heat can move through the layers through conduction and convection. 1/3 of the earth"s mass, but only 1/6 of the volume. Inner core is solid due to immense pressure, outer core is under less pressure so it remains liquid. Fluid outer core is responsible for the earth"s magnetic field. Magnetic field protects against cosmic radiation and solar wind.