PHSC 211 Chapter 4 Quiz (Fall 2020)– Liberty University (A grade) | Elements of Earth Science

PHSC 211 Chapter 4 Quiz (Fall 2020)– Liberty University (A grade) Questions 1 through 23 are based on the Lab Exercise: Identification of Metamorphic Rocks. Refer to your results from the lab exercise and the Overview to assist you in answering the questions. 1. Specimen #18 formed under which metamorphic conditions? a. contact metamorphism b. low-grade metamorphic conditions c. intermediate-grade metamorphic conditions d. high-grade metamorphic conditions 2. What property is diagnostic for specimen #18? a. banding b. slaty cleavage c. crinkly appearance d. effervescence during acid test 3. Specimen #18 is a. gneiss. b. schist. c. phyllite. d. slate. 4. Specimen #19 formed under which metamorphic conditions? a. contact metamorphism b. low-grade metamorphic conditions c. intermediate-grade metamorphic conditions d. high-grade metamorphic conditions 5. What property is diagnostic for specimen #19? a. slaty cleavage b. visible crystals c. satiny sheen d. fizzes during acid test 6. Specimen #19 is a. gneiss. b. schist. c. phyllite. d. slate. 7. Phyllite formed under which metamorphic conditions? a. contact metamorphism b. low-grade metamorphic conditions c. intermediate-grade metamorphic conditions d. high-grade metamorphic conditions 8. What property is diagnostic for phyllite? a. exceptionally clean slaty cleavage b. visible crystals c. satiny sheen d. fizzes during acid test 9. The grain in __________________ is microscopic, which gives it a sheen. a. gneiss. b. schist. c. phyllite. d. slate. 10. Specimen #21 is a. a low-grade metamorphic rock. b. a low- to intermediate-grade metamorphic rock. c. an intermediate- to high-grade metamorphic rock. d. a high-grade metamorphic rock. 11. What property is diagnostic for specimen #21? a. exceptionally clean slaty cleavage b. visible crystals c. satiny sheen d. fizzes during acid test 12. Specimen #21 is a. gneiss. b. schist. c. phyllite. d. slate. 13. The protolith for specimen #22 might have been a. rock salt. b. limestone. c. sandstone. d. shale. 14. What property is diagnostic for specimen #22? a. exceptionally clean slaty cleavage b. visible crystals c. satiny sheen d. fizzes during acid test 15. Specimen #22 is a. marble. b. quartzite. c. hornfels. d. anthracite coal. 16. The precursor for specimen #23 might have been a. rock salt. b. limestone. c. sandstone. d. shale. 17. Specimen #23 a. is harder than glass. b. effervesces when treated with acid. c. is foliated. d. has a dull luster. 18. Specimen #23 is a. marble. b. quartzite. c. hornfels. d. anthracite coal. 19. Specimen #24 formed under which metamorphic conditions? a. contact metamorphism b. low-grade metamorphic conditions c. intermediate-grade metamorphic conditions d. high-grade metamorphic conditions 20. Specimen #24 a. has a baked appearance. b. effervesces when treated with acid. c. is foliated. d. is banded. 21. Specimen #24 is a. marble. b. quartzite. c. hornfels. d. anthracite coal. 22. The precursor for specimen #25 might have been a. shale. b. limestone. c. basalt. d. bituminous coal. 23. Specimen #25 is a. marble. b. quartzite. c. hornfels. d. anthracite coal. 24. Under differential pressure, elongate mineral grains a. line up in a preferred orientation. b. begin to melt. c. fuse together. d. begin to dissolve. 25. Which is NOT an indication that a rock is foliated? a. slaty cleavage. b. fused grains. c. banding. d. a wavy or crinkled appearance 25. Quartzite is __________________ than quartz. a. harder b. clearer c. more foliated d. denser 26. Which is NOT a metamorphic setting? a. the area around a magma intrusion b. a mountain valley c. a subduction zone d. a continent-continent collision 27. How is foliation in metamorphic rocks different from layering (i.e., bedding planes) in sedimentary rocks? Foliation happens in metamorphic rocks in the presence of heat and pressure. Gneiss is an example of foliation. Layering occurs in sedimentary rocks through the accumulation of sediments. Shale is an example of layering. It is formed when particles of quartz, the size of clay, is compacted into layers but it can not be seen without instruments. Shale changes to gneiss through metamorphic conditions.