PHSC 211 Chapter 2 Quiz (Fall 2020)– Liberty University (A grade)

PHSC 211 Chapter 2 Quiz (Fall 2020)– Liberty University (A grade) 1. What mineral composition is most characteristic of felsic rocks? a. olivine, pyroxene, and calcium-rich plagioclase b. orthoclase, quartz, and biotite c. calcium-rich plagioclase and hornblende with some olivine d. particles of volcanic ash welded together 2. What mineral composition is most characteristic of mafic rocks? a. olivine, pyroxene, and calcium-rich plagioclase b. orthoclase, quartz, and biotite c. sodium-rich plagioclase, hornblende, and quartz d. particles of volcanic ash welded together 3. What mineral composition is most characteristic of intermediate rocks? a. olivine, pyroxene, and calcium-rich plagioclase b. orthoclase, quartz, and biotite c. sodium-rich plagioclase and hornblende with some quartz or biotite d. particles of volcanic ash welded together