ASTR 151 1st Edition Lecture 16 Outline of Last LectureI. Chapter 8 Section 1 Orbital PropertiesII. Chapter 8 Section 2 Physical PropertiesIII. Chapter 8 Section 3 Surface Features of the Moon and MercuryIV. Chapter 8 Section 4 Rotation RatesOutline of Current LectureI. Chapter 8 Section 3 Surface FeaturesII. Chapter 8 Section 5 Lunar Cratering/ Surface CompositionIII. Chapter 8 Section 6 Mercury is less cratered than the MoonIV. Chapter 8 Section 7 InteriorsV. Chapter 8 Section 8 How the Moon was formedVI. Chapter 8 Section 9 Evolution: History of the Moon and MercuryCurrent LectureI. Chapter 8 Section 3 Surface Featuresa. Nearside of the Mooni. Cratersii. Mariab. Farside of the Mooni. cratersc. Mercuryi. Cratersii. mariaII. Chapter 8 Section 5 Lunar Cratering/ Surface Compositiona. Meteoroid hit mooni. Ejecting materialii. Explosion ejects more material causing cratersThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.b. Age differencei. Highlands1. Rocks rich in aluminum2. 4.0-4.4 Billion yearsii. Maria1. Mantle material (darker patches) iron2. 3.2-3.9 Billion yearsc. Larger Craters (Basins)i. Usually have namesd. Regolithi. Thick layer of dustii. Made by meteorite impactse. Micrometeoritesi. Float through spacef. Moon was volcanically activei. Rilles on the moon was formedg. Water on Mooni. Lunar Prospector didn`t see itii. Likely to exist near the poles as iceiii. More water exists in our deserts than the moonh. Late Heavy Bombardmenti. Lunar Cataclysm1. Moon rocksa. Imbrium – youngest impact due to less cratersIII. Chapter 8 Section 6 Mercury is less cratered than the Moona. Mercuryi. Features1. Scarpa. Giant cliffs2. Hollowa. Irregular shaped depressionsb. Collapsed by magma chambersIV. Chapter 8 Section 7 Interiorsa. Moon`s density is low (3300kg/m3)i. Crust is much thickerii. Mantle composed of Mineralsiii. Core is small, Probably metallic and has a partial gravity at the polesV. Chapter 8 Section 8 How the Moon was formeda. Captured bodyb. Fissionc. Formed togetherd. CollisionVI. Chapter 8 Section 9 Evolution: History of Moon/ Mercurya. Mercury formed 4.6 billion years agoi. Geologically dead for the past 4 billion yearsb. Moon formed 4.6 billion years agoi. Oldest moon rock found in the highlands was 4.4billion years
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