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Rock Review Name______ Rock Review Name______________________________ 1. Most rocks that form from fragmental rock 5. Which type of rock is represented by the map particles are classified as symbol below? 1) extrusive igneous 2) intrusive igneous 3) clastic sedimentary 4) chemical sedimentary 1) clastic sedimentary rock formed from organic substances 2. A student classified the rock below as 2) chemically formed sedimentary rock sedimentary. that consists mainly of the mineral calcite 3) regional metamorphic rock with block like foliation 4) contact metamorphic rock that results from the alteration of limestone by contact with an igneous intrusion 6. Which rock was organically formed and sometimes contains fossilized plant impressions? 1) rock gypsum 2) phyllite 3) breccia 4) coal 7. Which processes lead directly to the formation of igneous rock? Which observation about the rock best supports this classification? 1) weathering and erosion 2) compaction and cementation 1) The rock is composed of several minerals. 3) heat and pressure 2) The rock has a vesicular texture. 4) melting and solidification 3) The rock contains fragments of other rocks. 8. Which texture best describes an igneous rock 4) The rock shows distorted and stretched that formed deep underground? pebbles. 1) glassy 2) vesicular 3. Most sandstone bedrock is composed of 3) fine grained 4) coarse grained sediment that was 9. What is the color and type of rock that forms 1) sorted by size and not layered oceanic crust at mid-ocean ridges? 2) sorted by size and layered 1) light colored and igneous 3) unsorted and not layered 2) light colored and sedimentary 4) unsorted and layered 3) dark colored and igneous 4. Which rock is sedimentary in origin and formed 4) dark colored and sedimentary as a result of chemical processes? 1) granite 2) shale 3) breccia 4) dolostone Page 1 2014 10. Obsidian's glassy texture indicates that it 16. Which physical characteristic best describes formed the rock phyllite? 1) slowly, deep below Earth's surface 1) glassy texture with gas pockets 2) slowly, on Earth's surface 2) clastic texture with angular fragments 3) quickly, deep below Earth's surface 3) bioclastic texture with cemented shell 4) quickly, on Earth's surface fragments 11. Which is a fine-grained igneous rock made up 4) foliated texture with microscopic mica primarily of pyroxene and plagioclase crystals feldspar? 17. During the Permian Period, sedimentary bedrock in the Appalachian Region was 1) gabbro 2) basalt subjected to high temperature and pressure. 3) granite 4) rhyolite Calcite deposits that had existed in this 12. Which is usually a characteristic of igneous environment would most likely have formed rocks with a high density? 1) schist 2) gabbro 1) They are light in color. 3) marble 4) gneiss 2) They are felsic. 18. Rocks are classified as igneous, sedimentary, 3) They have a high aluminum content. or metamorphic based primarily on their 4) They contain iron. 1) texture 13. Which rock is only formed by regional 2) crystal or grain size metamorphism? 3) method of formation 1) slate 2) hornfels 4) mineral composition 3) dunite 4) marble 19. Which characteristic of an igneous rock would 14. Wavy bands of light and dark minerals visible provide the most information about the in gneiss bedrock probably formed from the environment in which the rock solidified? 1) cementing together of individual miner 1) color 2) texture grains 3) hardness 4) streak 2) cooling and crystallization of magma 20. Which characteristic of nonsedimentary rocks 3) evaporation of an ancient ocean would provide the least evidence about the 4) heat and pressure during environment in which the rocks were formed? metamorphism 1) structure 15. The rock shown below has a foliated texture 2) color and contains the minerals amphibole, quartz, 3) crystal size and feldspar arranged in coarse-grained bands. 4) mineral composition Which rock is shown? 1) slate 2) dunite 3) gneiss 4) quartzite Page 2 2014 21. Which diagram below shows an area in which 23. The diagram below represents geological fine-grained igneous rocks are most likely to processes that act continuously on Earth to be found? form different rock types. 1) 2) 3) 4) 22. In which part of the Earth are felsic rocks most likely to be found? Which table correctly classifies each rock 1) continental crust type? 2) oceanic crust 1) 3) plastic mantle 4) rigid mantle 2) 3) 4) Page 3 2014 24. Which statement about the formation of a rock 25. Which type(s) of rock can be the source of is best supported by the rock cycle? deposited sediments? 1) Magma must be weathered before it can 1) igneous and metamorphic rocks, only change to metamorphic rock. 2) metamorphic and sedimentary rocks, only 2) Sediment must be compacted and 3) sedimentary rocks, only cemented before it can change to 4) igneous, metamorphic, and sedimentary rock. sedimentary rocks 3) Sedimentary rock must melt before it can change to metamorphic rock. 4) Metamorphic rock must melt before it can change to sedimentary rock. Page 4 2014 Answer Key Rock Review 1. 3 2. 3 3. 2 4. 4 5. 2 6. 4 7. 4 8. 4 9. 3 10. 4 11. 2 12. 4 13. 1 14. 4 15. 3 16. 4 17. 3 18. 3 19. 2 20. 2 21. 3 22. 1 23. 2 24. 2 25. 4 Page 5 2014.
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