UIUC PS 199 - volcano sample test (1) (13 pages)

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volcano sample test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question 1 Volcanic belts form along a islands in the Pacific Ocean b North American mountain ranges c the boundaries of Earth s plates d the coast of Antarctica 2 The formation of the Hawaiian Islands is one example of a volcanoes forming over a hot spot b volcanoes forming along plate boundaries c the Ring of Fire d continental drift 3 The viscosity of magma depends upon its silica content and its a pahoehoe b temperature c magnetism d pyroclastic flow 4 The long tube in the ground that connects the magma chamber to Earth s surface is called the a vent b side vent c pipe d crater 5 If a volcano s magma is high in silica the volcano will probably a erupt quietly b remain dormant c erupt explosively d produce dark colored lava 6 Pahoehoe is a cooler slower moving lava b fast moving hot lava c volcanic ash d lava with a rough chunky surface 7 When groundwater heated by magma rises to the surface and collects in a natural pool it is called a a hot spring b geyser c vent d pyroclastic flow 8 In volcanic areas groundwater heated by magma is a source of a lava flows b silica c geothermal energy d pyroclastic flows 9 Which of the following volcano hazards is made up of rocky particles about the size of a grain of sand a volcanic bombs b pahoehoe 10 11 12 13 14 15 16 17 18 19 c volcanic cinders d volcanic ash The main hazard from a quiet volcanic eruption is a volcanic gases b lava flows c geysers d pyroclastic flows Tall cone shaped mountains in which layers of lava alternate with layers of ash are called a shield volcanoes b cinder cone volcanoes c composite volcanoes d lava plateaus When many layers of thin runny lava build up a high level area the result is a a lava plateau b shield volcano c cinder cone volcano d composite volcano Which type of rock would you expect to form as the result of an explosive eruption a pahoehoe b granite c pumice d aa What