Assessment Chapter Test B Rocks: Mineral Mixtures USING KEY TERMS Use the terms from the following list to complete the sentences below. Each term may be used only once. Some terms may not be used. stratification composition rock cycle rock nonfoliated rock erosion gradient strata deposition 1. The process in which layers of sedimentary rock are formed is called. RCKs3 2. A rock whose mineral grains are NOT formed in bands is called.rcks4 3. Grains of sand are washed into rivers and oceans through the process of.rcks1 4. The minerals found in a rock determine its.rcks1 5. Rocks change their composition during the.rcks1 UNDERSTANDING KEY IDEAS Write the letter of the correct answer in the space provided. 6. The process in which sediment is dropped and comes to rest is called a. deposition. RCKs3 b. stratification. c. cementation. d. foliation. 7. Which of the following is a coarse-grained igneous rock? RCKs2 a. shale b. marble c. granite d. gneiss 8. Partially decomposed plant material forms RCKs3 a. chemical sedimentary rock. b. fossiliferous limestone. c. clastic sedimentary rock. d. coal. Holt Science and Technology 58 Rocks: Mineral Mixtures
9. When shale is exposed to slight heat and pressure, what foliated metamorphic rock does it become? RCKs4 a. schist b. gneiss c. phyllite d. slate 10. How is clastic sedimentary rock different from chemical sedimentary rock? RCKs3 11. Describe how contact metamorphism is different from regional metamorphism. RCKs4 12. What will a nonfoliated rock look like under a microscope? RCKs4 13. How does limestone form? RCKs4 14. How do rocks recrystallize? RCKs4 Holt Science and Technology 59 Rocks: Mineral Mixtures
CRITICAL THINKING 15. Why is rock a good building material? RCKs4 16. What does an extrusive rock formation tell about what is going on below the Earth s surface? RCKs2 17. Why is sedimentary rock more common on Earth s surface than metamorphic rock or igneous rock? RCKs1 Holt Science and Technology 60 Rocks: Mineral Mixtures
CONCEPT MAPPING 18. Complete the concept map below using the following terms: RCKs4 conglomerate igneous rock dikes texture erode sedimentary rock composition. Rocks can form as are classified into magma subgroups cools and solidifies as on the basis of a. b. c. such as underground that can be exposed and fine-grained coarse-grained forming e. siltstone f. d. into grains of sand and clay that are deposited on the ocean floor forming g. Holt Science and Technology 61 Rocks: Mineral Mixtures
TEACHER RESOURCE PAGE 25. E Chapter Test B 1. stratification 2. nonfoliated rock 3. erosion 4. composition 5. rock cycle 6. A 7. C 8. D 9. D 10. Answers will vary. Sample answer: Clastic sedimentary rock is formed from rock fragments that are cemented together by calcite or quartz. Chemical sedimentary rock is made of dissolved minerals that eventually crystallize. 11. Answers will vary. Sample answer: Contact metamorphism occurs when magma comes into direct contact with rock. Regional metamorphism occurs when large pieces of the Earth s crust collide with each other. 12. Answers will vary. Sample answer: Under a microscope a nonfoliated rock will not have mineral grains that are aligned. 13. Answers will vary. Sample answer: Limestone is formed from the remains, or fossils, of animals that once lived in the ocean. 14. Answers will vary. Sample answer: Rocks recrystallize when the crystals of the minerals change in composition. 15. Rocks like granite and marble are good building materials because they can withstand weathering for long periods of time. 16. Answers will vary. Sample answer: An extrusive rock formation reveals that there is a lot of activity, perhaps volcanic, going on below the Earth s surface. 17. All three rock types weather when they are uplifted to the earth s surface, forming sediments that cover the Earth s surface 18. a. igneous rock b. composition c. texture d. dikes e. erode f. conglomerate g. sedimentary rock Chapter Test C 1. D 2. A 3. C 4. B 5. A 6. D 7. A 8. B 9. B 10. D 1 12. A 13. C 14. uplift 15. stratification 16. index minerals 17. erosion 18. intrusive igneous rock Standardized Test Preparation READING Passage 1 1. D 3. B Passage 2 3. D INTERPRETING GRAPHICS 3. C 4. H MATH Holt Science and Technology 108 Rocks: Mineral Mixtures