Volcanoes & Other Igneous Activity - ES - Ch 10
Quiz by Linwood Starling
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30 questions
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- Q1A magma’s viscosity is directly related to its ____.coloragedepthsilica content45s
- Q2Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?All of themcomposition of the magmatemperature of the magmaamount of dissolved gases in the magma45s
- Q3A lava flow with a surface of rough, jagged blocks and sharp, angular projections is called a(n) ____.pyroclastic flowaa flowpahoehoe flowash flow45s
- Q4As the temperature of lava increases, ____.it can flow a much shorter distanceit begins to hardenits viscosity increasesits viscosity decreases45s
- Q5Which list places the magma types in order of decreasing viscosity (most viscous listed first)?basaltic, rhyolitic, andesiticbasaltic, andesitic, rhyoliticandesitic, basaltic, rhyoliticrhyolitic, andesitic, basaltic45s
- Q6Which of the following is NOT a factor affecting how violently or quietly a volcano erupts?magma’s temperatureconcentration of dissolved gases in the magmasize of the volcano’s conemagma’s composition45s
- Q7Highly explosive volcanoes tend to have what type of magma?magma with low silica, low viscosity, and lower gas contentmagma with no silica, high viscosity, and no gas contentmagma with low silica, high viscosity, and lower gas contentmagma with high silica, high viscosity, and higher gas content45s
- Q8A volcanic bomb is a ____.piece of semi-molten rock ejected as glowing lavatiny particle of ejected rock less than 64 mm in sizepocket of gas that is released suddenlyvery violent volcanic explosion45s
- Q9The particles produced in volcanic eruptions are called ____.laccolithscalderaspyroclastic materialvolcanic stocks45s
- Q10Which of the following is NOT considered to be a pyroclastic material?ashpahoehoecinderslapilli45s
- Q11Large particles of hardened lava ejected from a volcano are called ____.cinderslapilliblocksbombs45s
- Q12What is the most abundant gas associated with volcanic activity?water vaporcarbon dioxidechlorinesulfur oxide45s
- Q13What type of volcano is built almost entirely from ejected lava fragments?cinder coneshield volcanocomposite conepahoehoe volcano45s
- Q14The broad, slightly dome-shaped volcanoes of Hawaii are ____.composite cone volcanoesshield volcanoespyroclastic volcanoescinder cone volcanoes45s
- Q15A volcano that is fairly symmetrical and has both layers of lava and pyroclastic deposits is a ____.cinder cone volcanopyroclastic volcanocomposite cone volcanoshield volcano45s