EPSC 201 Lecture Notes - Lecture 1: Big Bang, Meteorite Classification, Challenger Deep

• School: McGill University
• Department: Earth & Planetary Sciences
• Course: EPSC 201
• Professor: Natalya Gomez

Document Summary

Nebula condenses into a swirling disc, with a central ball surrounded by rings: ball at the center grows dense and hot enough for fusion to begin (>5x10^6 celsius, dust condenses in the ring. Gravity reshapes the prot-earth into a sphere: the interior heats up (from collisions, high pressure, radioactive decay) and becomes soft, the interior differentiates into: A rocky outer shell a mantle (lighter) Sun is medium sized orbited by 8 planets. U(cid:374) is (cid:1013)(cid:1013). (cid:1012)% of ou(cid:396) sola(cid:396) s(cid:455)ste(cid:373)"s (cid:373)ass. A planet is: large body orbiting a star (sun, spherical shape, cleared neighborhood of other objects by gravity. Moon is: a solid body locked in orbit around a planet. Two groups of planets: terrestrial planets (small, dense, rocky planets) Mercury venus earth mars: giant planets (large, low-density, gas and ice giants) Most meteorites are pieces of rocks broken off asteroids during their collisions with one another.