GO125 Unit 4 Quiz

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Park University *

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125

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Geology

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Feb 20, 2024

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docx

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Uploaded by CommodoreFireHerring7

GO125 Unit 4: Quiz 4 Unit 4: Quiz 4 Quiz Instructions Note: this is a timed quiz. You may check the remaining time you have at any point while taking the quiz by pressing the keyboard combination SHIFT, ALT, and T... Again: SHIFT, ALT, and T... Question 1 2 pts If all of the following rocks were to completely melt and reach the same final temperature, which would produce magma with highest viscosity? Group of answer choices basalt gabbro andesite diorite rhyolite Question 2 2 pts Most rifting occurs at spreading centers ________. Group of answer choices in the interior of continents and subduction zones located below sea level on the margins of continents and hot spots Question 3 2 pts Rock may melt by ________. Group of answer choices lowering the pressure on it raising its temperature increasing its water content All of these choices are correct. Question 4 2 pts

Mineral growth in magmas at the surface with temperatures around 1,000 to 1,200°C occurs in the following way Group of answer choices Iron and magnesium will link up with aluminum and the silicon-oxygen tetrahedron as magma temperature decreases to sequentially form four distinct and discontinuous families of minerals—olivine, pyroxene, amphibole, and biotite mica. Calcium will combine with aluminum and the silicon-oxygen tetrahedron to begin forming the plagioclase feldspar family, a continuous and gradational series of minerals. Both of these are correct. None of these choices are correct. Question 5 2 pts What erupts in a geyser? Group of answer choices superheated water and steam liquid hydrogen magma oil and natural gas All of these choices are correct. Question 6 2 pts Violent causes of death from volcanic eruptions include ________. Group of answer choices pyroclastic flows tsunami lahars poison gases All of these choices are correct. Question 7 2 pts Active volcanoes today in Oregon and Washington, including Mt. St. Helens, result from ________. Group of answer choices heat generated by friction on the San Andreas Fault the subduction of the Juan de Fuca Plate beneath North America the subduction of the Pacific Plate beneath North America spreading of the Juan de Fuca Ridge continent-continent collision Question 8 2 pts

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