Exam 14: Tectonism and Volcanism
Exam 1: Physical Geography: Earth Environments and Systems60 Questions
Exam 2: Representations of Earth60 Questions
Exam 3: Earth-Sun Relationships and Solar Energy60 Questions
Exam 4: The Atmosphere, Temperature, and the Heat Budget60 Questions
Exam 5: Atmospheric Pressure, Winds, and Circulation Patterns60 Questions
Exam 6: Moisture, Condensation, and Precipitation60 Questions
Exam 7: Air Masses and Weather Systems60 Questions
Exam 8: Global Climates and Climate Change60 Questions
Exam 9: Low-Latitude and Arid Climate Regions60 Questions
Exam 10: Middle-Latitude, Polar, and Highland Climatic Regions60 Questions
Exam 11: Biogeography60 Questions
Exam 12: Soils and Soil Development60 Questions
Exam 13: Earth Materials and Plate Tectonics60 Questions
Exam 14: Tectonism and Volcanism60 Questions
Exam 15: Weathering and Mass Wasting60 Questions
Exam 16: Subsurface Water and Karst60 Questions
Exam 17: Fluvial Processes and Landforms60 Questions
Exam 18: Arid Region and Eolian Landforms60 Questions
Exam 19: Glacial Systems and Landforms60 Questions
Exam 20: Coastal Processes and Landforms60 Questions
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A structural downfold is known as a(n)____.
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D
What is the main factor that determines whether a volcanic eruption is explosive or effusive? How does that factor affect eruptions in this way?
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Viscosity is the main factor. Magma viscosity influences the explosiveness of a volcanic eruption through its effect on the dissolved gas content of the magma, which tries to escape the magma as the magma rises closer to the surface. Gases are not vented easily from more viscous magmas, allowing gas pressure to build.
Tectonic forces that pull parts of the crust away from each other are known as _______________ tectonic forces.
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tensional
A(n)_______________ is a thin, horizontal sheet of igneous rock that solidified between rock layers within the Earth.
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The subsurface location where rock displacement and the resulting earthquake originate is the ____.
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Exogenic processes, which originate at Earth's surface, tend to increase relief.
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A cliff that results from movement along a fault is called a(n)_______________.
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Faulting occurs when compressional forces are applied to rocks that are ductile rather than brittle.
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Which type of volcano is composed of both lava flows and pyroclastic materials?
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The strike of a rock is the angle it is inclined from the horizontal.
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Lower viscosity magmas will result in more explosive volcanic eruptions.
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Compressional tectonic forces may result in the formation of ____.
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A large depression left after a huge volcanic eruption is called a(n)_______________.
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Which type of volcano has the "classic volcano shape", with concave slopes that are gentle near the base and steep near the top?
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