GEO 101 1st Edition Lecture 7 Outline of Last Lecture 1 Igneous rocks 2 Igneous Rocks Plate Tectonics 3 2 components of magma 4 Evolution of magma 5 Changing Magma s Composition 6 Textures 7 Textures of Igneous Rocks a Aphanitic b Phaneritic c Porphyritic Texture d Glassy Texture 8 Competition of Igneous Rocks 9 Viscosity 10 Mafic Magma 11 Felsic Magma 12 Naming Igneous rocks a Felsic b Intermediate c Mafic 13 Bowen s Reaction Series These 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 14 Intrusive Igneous Rock Outline of Current Lecture 1 Review Questions Current Lecture Review Questions 1 According to the geocentric model of the Universe a The Earth lies at the center of the Universe 2 According to the big bang theory a Everything that now compromises the Universe started at a single point about 14 billion years ago 3 The Earth produces a that shields the planet from a Magnetic field teardrop shape solar wind 4 Why did most geologists initially opposes Wegener s hypothesis of continental drift a Wegner could not explain how or why continents move 5 Today what is the favored explanation of apparent polar wander paths a Continents drift with respect to relatively fixed magnetic poles 6 A lithospheric plate consists of a The crust and the uppermost part of the mantle 7 Which type of bonding occurs when atoms share electrons a Covalent Bonds 8 The chemical formula fro quartz is SiO2 this means a There is 1 silicon for every 2 oxygen atoms 9 If you hit a mineral with a hammer and it breaks into irregular shaped surfaces that is called a Fracture 10 Which mineral is not a ferromagnesian iron and magnesium silicate a Quartz