EPSC 201 Lecture 1: EPSC NOTES

97 views7 pages

Document Summary

Parts of the earth mantle: plyable rock (plastic) liquid outer core: liquid iron where magnetic eld is generated; s waves can"t pass, but p waves can solid inner core: purely crystal and iron. 91. 2% of earth"s mass comprises just four elements: Big bang-all the mass and energy was in a single ball. Copernicus & galileo studies led to acceptance that earth and planets orbit the sun. Newton planet motion was explained by theory of gravity: stars are immense balls of incandescent gas, hydrogen nuclei (protons) within a few seconds, at 3 minutes, protons are fused to form helium nuclei, light nuclei (atomic no. < 5) by big bang nucleosynthesis: after abut 380 000 years of expansion and cooling, atoms began to bond; electrons attached to the nuclei, hydrogen formed h2 molecules the fuel of stars, atoms and molecules coalesced into gaseous nebulae. Eventually the stars become hydrogen starved and explodes (supernova explosion)

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents