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Council of Student Organizations De La Salle University – Manila Rm. 402 Bro. Connon Hall, De La Salle University 2401 Taft Avenue, Manila GEOENG1 Quiz 1 Reviewer Prepared by: Dane Rei Abranilla I. Enumeration: 1 to 4. Geotechnical Applications 5 to 10. Silicate materials 11 to 12. Factors affecting weathering 13 to 15. Three components of magma II. Multiple choice: 1. Which of the following is NOT an agent of metamorphism? a. pressure b. heat c. fluid activity d. time e. electromagnetism 2. Which is the order of decreasing grain size and perfection of foliation a. gneiss -> schist -> phyllite -> slate b. schist -> slate -> gneiss -> phyllite c. phyllite -> slate -> schist -> gneiss d. slate -> phyllite -> schist -> gneiss e. none of the above 3. Which of the following does not belong to the group? a. Pyroxene b. Amphibole c. Biotite mica d. Muscovite mica e. Olivine 4. What is the phaneritic counterpart of Andesite? a. Peridotite b. Diorite c. Gabbro d. Basalt e. Rhyolite 5. The process in which chemical, physical, and biological changes occur after deposition of sediments. a. Metamorphism b. Foliation c. Diagenesis d. Blasting e. Hydrolysis 6. The nonfoliated metamorphic rock formed from limestone and dolostone is called a. schist b. quartzite c. greenstone d. marble e. hornfels 7. This is a form of chemical weathering wherein electrons are lost from one element. a. Dissolution b. Electronification c. Hydrolysis d. Carbonation e. Oxidation 8. This type of igneous texture is exceptionally coarse grained and forms in late stages of crystallization of granitic magmas. a. Porphyritic b. Pyroclastic c. Pegmatitic d. Glassy e. Aphanitic 9. The chief constituents of detrital rocks include the following EXCEPT: a. Clay minerals b. Micas c. Feldspars d. Olivine e. Quartz 10. Which of the following is an example of mafic rocks? a. Gabbro b. Obsidian c. Andesite d. Pumice e. None of the above Modified True/False: 1. Water expands when it solidifies, rock shrink. 2. Tuff is an example of pyroclastic rocks. 3. Minerals have high specific gravities. 4. Geofabrics are sheets of interlocking steel or timber driven into the ground. 5. SPT stands for Soil Penetration Test. Write the minerals that corresponds to the Mohr’s scale: III. IV. 1 - ______________ 6 - ______________ 2 - ______________ 7 - ______________ 3 - ______________ 8 - ______________ 4 - ______________ 9 - ______________ 5 - ______________ 10 - ______________ Answers: I. Enumeration 1 to 4. Geotechnical Applications Possible answers: Shallow foundation, Deep foundation, Retaining walls, Earth dams, Concrete dams, Earthworks, Geofabrics, Reinforced earth walls, Soil nailing, Sheet piles, Cofferdam, Shoring, Tunneling, Blasting, Ground improvement, Environmental geomechanics. 5 to 10. Silicate materials Feldspar, Quartz, Muscovite, Clay minerals, Pyroxene, Olivine 11 to 12. Factors affecting weathering Effective surface area, Rock characteristics 13 to 15. Three components of magma Liquid portion, Solids, Volatiles II. 1. e Multiple Choice 2. a 3. d 4. b 5. c 6. d 7. e 8. c 9. d 10. a 1. 2. 3. 4. 5. III. True/False True True True False; Sheet Piles False; Standard IV. Mohr’s Circle 1 – Talc 6 – Orthoclase 2 – Gypsum 7 – Quartz 3 – Calcite 8 – Topaz 4 – Fluorite 9 – Corundum 5 – Apatite 10 – Diamond