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From RegentsEarth.com 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 win Ques. #1 What kind of rock is formed from the cementation of particles ranging in size from 0.006 to 0.0004 cm? Siltstone Back Ans. Ques. #2 All rocks are made from............ Minerals Ans. Back Ques. #3 What rock is formed when quartz sandstone is subjected to heat and/or pressure? Quartzite Ans. Back Ques. #4 Identify this rock: Vesicular, low density, fine texture, containing plagioclase feldspar, biotite, and potassium feldspar. Vesicular rhyolite Ans. Back Ques. #5 What is the most abundant element found in the rocks of the earth’s crust? Oxygen Ans. Back Ques. #6 What is the name of this structure? The silicon-oxygen tetrahedron Ans. Back Ques. #7 What test is shown in the illustration? Streak test Ans. Back Ques. #8 The mineral shown in the diagram breaks into flat sheets. This tendency is called....... Cleavage Ans. Back Ques. #9 The mineral grains in the diagram are all about 2.5 mm in diameter. What rock is this? Gabbro Ans. Back Ques. #10 Name any property of the rock in the diagram which would indicate that it is metamorphic. Banding or minerals or distortion of structure Ans. Back Ques. #11 What term describes how non-crystalline minerals break? Fracture Ans. Back Ques. #12 Hardness, color, cleavage or fracture are all mineral characteristics which are determined by................... The internal arrangement of atoms Ans. Back Ques. #13 What characteristics would you expect to see in an igneous rock that cooled slowly deep in the earth? Large crystal grains - Coarse texture Ans. Back Ques. #14 A student puts acid on an unidentified rock and notices that it bubbles. Of what mineral is this rock most likely made? Calcite Ans. Back Ques. #15 In what kind of rocks are fossils almost always found? Sedimentary Ans. Back Ques. #16 Which rock shows foliation, has medium to fine grain and contains the mineral pyroxene. Schist Ans. Back Ques. #17 Name two different minerals that have exactly the same chemical composition. Diamond & graphite Ans. Back Ques. #18 Name two rocks which may form as seas evaporate. Halite, Rock Gypsum (gypsum) and Dolostone Ans. Back Ques. #19 What rock is this? Breccia Ans. Back Ques. #20 Which mineral is used to make furnace bricks? Olivine Ans. Back Ques. #21 What rock is produced when limestone or dolostone is subjected to heat and/or pressure? Marble Ans. Back Ques. #22 Which non-vesicular igneous rock is entirely non-crystalline and is felsic? Obsidian Ans. Back Ques. #23 What kind of rock is produced when metamorphic rocks melt and then solidify and then weather into small particles which are cemented together? Sedimentary rock Ans. Back Ques. #24 The particles in this rock sample are 0.15 cm in diameter. What kind of rock is it? Sandstone Ans. Back Ques. #25 Where are sedimentary rocks usually found? As a thin veneer on the surface Ans. Back Ques. #26 Which characteristic is shown by this rock? Fracture Ans. Back Ques. #27 Which mineral does not show cleavage, contains iron, and has a streak that is different from it’s common color? Pyrite Ans. Back Ques. #28 This rock shows banding. What is it? Gneiss Ans. Back Ques. #29 A student attempts to scratch a piece of glass with an unknown mineral. Which characteristic of the mineral is she trying to determine? Hardness Ans. Back Ques. #30 Which of the following is the oldest part of the conglomerate rock shown? > The pebbles in the rock > The cement > The crack in the rock > The rock itself The pebbles Ans. Back YOU’RE A WINNER! A clastic rock is made from fragments cemented together?