PHYS 1901 Lecture Notes - Lecture 8: Seismic Wave, Runaway Greenhouse Effect, Outer Core
19 Apr 2016
School
Department
Course
Professor
Document Summary
1 earth and moon: read chapter 7 in the textbook, exercises: do all review and discussion and all conceptual self-test . 2. 1 the earth"s atmosphere: mixture of gases: n2 (78%), o2 (21%), ar (0. 9%), co2 (0. 03%, considerable amount of water vapour (0. 1% 3%, see figure 7. 2, atmospheric structure layers, troposphere. Highest pressure part of the atmosphere breatheable. Warms up with altitude uv absorption. Little weather airlines y here: mesosphere. Meteors burn up here: thermosphere (ionosphere) Temperature begins to increase again from solar radiation e ects. Re ective to radio waves of certain lengths (am radio) 2: water vapour and carbon dioxide small amounts in the atmosphere still large e ect. 2. 2 earth"s interior and surface: main regions of the earth: inner core, outer core, mantle, crust, see figure 7. 1, cannot probe the earth"s interior directly cannot drill below 10km, modelling interior earthquakes, earthquakes seismic waves. Mantle 3000km thick 80% of planets volume, dense, rocky material (silicon and oxygen)
