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APSC 151 Midterm Questions | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
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APSC 151 Midterm Questions | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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  • August 4, 2024
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  • 2024/2025
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APSC 151 Midterm Questions | Questions & Answers (100 %Score) Latest Updated
2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

Which of the following sedimentary rocks is usually biochemical in origin?

a) bedded salt

b) conglomerate

c)sandstone

d) wacke

e) limestone - e



What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks?



a) carbonates

b) quartz

c) cocoliths

d) micas

e) feldspars -



Lava flows are typically finer grained than intrusive igneous rocks. Why?



a) The extrusive magma, because it is deep below the surface, cools very slowly producing very small
mineral grains.



b) Intrusive magma is cooler because it is well insulated by the surrounding rock.



c) The extrusive magma cools quickly so the mineral grains do not have time to grow.



d) Intrusive magma flows onto the surface and cools very slowly, allowing small mineral grains to grow.



e) the lava weathers before it can cool - c

, Under the application of uniform, confining pressure, rocks will generally ________.



a) increase in density but retain primary bedding orientations



b) increase in porosity



c) grow or crystallize a new set of low density hydrous minerals



d) shatter and turn into a breccia



e) bend, fold, buckle, and shear to make typical deformed metamorphic textures - e



Which common rock forming minerals exhibit a perfect single basal cleavage?

a) pyroxenes like augite



b) amphiboles like hornblende



c) slate



d) feldspars like plagioclase and orthoclase



e) micas like muscovite and biotite - e



Which of the following high silica igneous rocks can be of low enough density to float on water



a) obsidian



b) granite

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