GLY 1000 02 Dynamic Earth Question Bank Answer sheet Question QUESTION ANSWER OPTION QUESTION ANSWER OPTION QUESTION QUESTION ANSWER OPTION ANSWER OPTION ANSWER OPTION Exam 1 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A C C C C A D C D D A B B A A E D B C B B B B B A A D C C B B C D C D B A C D D C B A B A B A B C C 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 D D D A D D A A A A D C B B B B C D B C A B A C C B B A C B B A C A D B B A A C B B C B A C B C B C 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 B F C D A C B B C B D B A B A A D F B D C B B B D C B C A A B B C C A C C C D A C C D B C B B C D A 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 A A D D B D C B D C A A B A A B D D C D B C A C B A C A C B C C A B D B D B C D D C A A B D D A C C 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 A B B C D A D B A C B B B D D B D A C B C C B D C A B C C C C A B D B C D B B D C A A B C B A B D C Midterm 2 CHAPTER 9 The Wrath of Vulcan Volcanic Eruptions MULTIPLE CHOICE 1 In 79 C E the citizens of Pompeii in the Roman Empire were buried by pyroclastic debris derived from an eruption of a Mt Olympus b Olympus Mons c Mt Vesuvius d Mt St Helens 2 The smoky cloud that rises from the vent of an actively erupting volcano is composed of a b c d smoke from wildfires inside the volcanic chimney smoke from wildfires on the outer slopes of the volcano that funnel into the crater fine volcaniclastic debris ash suspended in the air a continuous fountain of dark basaltic lava 3 Pele s hair consists of thin strands of basaltic volcaniclastic debris acquire aerodynamic torpedo like shapes during flight out of the volcanic vent forms only at the leading edge of basaltic lava flows a b c d was instrumental in scoring the winning goal to defeat Uruguay in the 1958 World Cup finals 4 Ash cinders and blocks are all types of a volcaniclastic debris c Pele s hair b d volcanoes lava flows a Puerto Rico c Aruba b Martinique d Jamaica lahar a b glowing avalanche d stratovolcano c flood basalt 7 Volcanic bombs are 5 In 1902 a famous deadly volcaniclastic flow killed thousands of people on the Caribbean island of 6 A fast moving flow consisting of a mixture of water and volcaniclastic debris is termed a a pyroclastic blocks that acquire aerodynamic shapes during flight out of the volcanic vent b c d used by geologists to set off small eruptions in volcanoes that are deemed potentially dangerous explosive bodies of lava with high volatile content cinders that explode upon impact with the ground 8 Pahoehoe a forms when basaltic lava flows cease flowing and solidify simultaneously b has a smoother texture than aa c is easier to walk on than aa is d All of the above are correct 9 Basaltic lavas that solidify at the surface before flow ceases fracture irregularly producing a sharpsurfaced lava rock named a pahoehoe b aa d hyaloclasite c pumice 10 Most terrestrial volcanic glass is highly silicic in composition is coarse grained d freezes from lavas with low viscosity c consists of microscopic crystals 11 Basaltic lavas contain more iron and magnesium than rhyolitic lavas contain more silica than rhyolitic lavas are more viscous than rhyolitic lavas contain a greater proportion of trapped volatiles than rhyolitic lavas 12 Pillow lavas are associated with a b continental rhyolitic eruptions continental basaltic eruptions c submarine rhyolitic eruptions d submarine basaltic eruptions 13 The difference between tephra and tuff is that tephra is created in ash falls whereas tuff is created in pyroclastic flows tephra is unlithified whereas tuff is lithified tephra is always silicic whereas tuff is always basaltic a b c d All of the above are correct 14 Rhyolitic lavas a b a b c d a do not flow as far from the vent as basaltic lavas do b c d All of the above are correct cool much more slowly than basaltic lavas do are associated with volcanoes that almost never emit pyroclastic debris 15 Columnar jointing is a type of fracturing that occurs in andesitic and rhyolitic lava flows A True B Fasle 16 The lithification of material from a pyroclastic flow forms a rock called a metabasalt c migmatite b ignimbrite d tuff 17 Mafic magmas are distinguished by a b light coloration low viscosity c high viscosity d high silica content 18 Gases that are abundantly emitted by volcanoes include a water vapor carbon dioxide and sulfur dioxide b oxygen ozone and water vapor c oxygen hydrogen and neon d carbon dioxide carbon monoxide and oxygen 19 The characteristic rotten egg smell of many active volcanoes is derived from a b iron and magnesium within lava carbon dioxide gas d hydrogen sulfide gas c stale water within the magma chamber 20 Olympus Mons the largest known volcano in the Universe is found on a Earth b Mars c Neptune …
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