Earth Sciences 1086F/G Lecture Notes - Lecture 10: Solar Wind, Asthenosphere, Plate Tectonics
11 Jun 2020
School
Department
Course
Professor
Document Summary
Evening star see it for 3hrs after sunset or before sunrise. At this time brighter than any object except for moon: earth"s twin, similar density and size, astronomers peer below clouds using radar 23 spacecraft. Orbit & rotation: orbital path almost same plain as earth. *rotates clockwise (including uranus/pluto) while others are counter-clock. Clouds rotate in same sense as surface but more rapidly. Atmosphere & greenhouse: covered in clouds (droplet of sulfur and sulfuric acid) Below thick atmosphere is co2, n, water vapour. Impact craters: very few small craters due to dense atmosphere, small objects burn through friction, crater counts important for relative age (more crater the older) Venus have very few craters and rarely filled with lava, indicating formed after recent major volcanic activity. Volcanic features: clusters of small volcanic domes, blocky ridges and valleys. Coronae: formed by mantle plumes that bring magma up to crust and partially subside.
