Understanding Convergent Plate Boundaries and Resources

Question 1 Not yet graded / 4 pts In your own words, compare and contrast the three types of convergent plate boundaries. Your Answer: Oceanic-Continental Convergence: Occurs when an oceanic plate collides with a continental plate. The denser oceanic plate is subducted beneath the less dense continental plate. Leads to the formation of deep-sea trenches, volcanic mountain ranges, and seismic activity. Oceanic-Oceanic Convergence: Involves the collision of two oceanic plates. One of the plates is usually subducted beneath the other, forming deep ocean trenches and volcanic island arcs. Results in the creation of volcanic islands and can lead to powerful earthquakes. Continental-Continental Convergence: Happens when two continental plates collide. Both plates are too buoyant to subduct, so they crumple and form high mountain ranges. This collision results in the formation of vast mountain systems and significant seismic activity. Question 2 Not yet graded / 4 pts In your own words, list and describe two examples of renewable resources and two examples of non-renewable resources. Your Answer: Renewable Resources: 1. Solar Energy: Solar energy is harnessed from the sun's radiation and converted into electricity or heat using solar panels. It is a continuously available and environmentally friendly source of energy. 2. Wind Energy: Wind energy is generated by harnessing the kinetic energy of moving air with wind turbines. It is a sustainable and clean source of electricity. Non-Renewable Resources: 1. Fossil Fuels: Fossil fuels like coal, oil, and natural gas are non-renewable resources formed over millions of years from the remains of ancient plants and animals. They are finite and release greenhouse gases when burned.

2. Nuclear Fuel: Uranium is a non-renewable resource used as fuel in nuclear power plants. It undergoes nuclear fission to produce energy, but uranium reserves are limited, and nuclear waste disposal is a challenge. Question 3 2 / 2 pts

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Using Figure 1, what layer of the Earth is A indicating? Lithosphere Mantle Correct! Asthenosphere Outer Core Question 4 2 / 2 pts

Using Figure 3, look at location E. A deep-ocean trench is very likely to be found at location E. True Correct! False Question 5 2 / 2 pts

Using Figure 2, what step in the rock cycle is B indicating? Coalification Magma Evaporation Correct! Metamorphism

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Question 6 2 / 2 pts

Using Figure 1, what layer of the Earth is D indicating? Inner Core Correct! Outer Core Lithosphere Asthenosphere

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Question 7 2 / 2 pts Using Figure 3, look at location B. The type of volcano most likely to be found at location B is a cinder cone. True Correct! False

Question 8 0 / 2 pts Using Figure 3, what type of plate boundary occurs at location A? Divergent You Answered Continent-Continent Convergent No answer text provided.

Correct Answer Ocean-Ocean Convergent Question 9 2 / 2 pts Using Figure 3, what type of plate boundary occurs at location C? Correct! Transform Continent-Continent Convergent

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Divergent Question 10 2 / 2 pts

Using Figure 1, what layer of the Earth is E indicating? Correct! Inner Core Lithosphere Outer Core Mantle Question 11 2 / 2 pts What element is the most abundant in the Earth's crust by weight? Chlorine Sodium Carbon Correct! Oxygen Question 12 2 / 2 pts Domes and basins are circular folds; anticlines and synclines are linear folds.

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Correct! True False Question 13 2 / 2 pts The Himalayas formed as a result of ________. an ocean-continent convergence an ocean-ocean convergence a hot spot Correct! a continent-continent convergence Question 14 2 / 2 pts The Appalachian Mountains may have once been as lofty as the Himalayan-Tibetan Mountain belt is today. Why are they not this high now? They developed a dense crustal root following collision, and isostasy forced them to sink to their present elevation. The mountains cooled following the collision, which increased the density of the rocks by cooling, then isostasy forced the mountains to sink.

Correct! They formed long ago, and erosion has beveled them to their present low elevation. Question 15 2 / 2 pts Erosion is the breakdown of rock and mineral at the Earth’s surface. True Correct! False Question 16 2 / 2 pts The Himalayas are currently growing taller. Correct! True False Question 17 2 / 2 pts Atoms that have an electrical charge due to a gain or loss of electrons are called ________. Isochrones

periodic elements Correct! Ions Isotopes Question 18 2 / 2 pts Pumice and scoria both exhibit a vesicular texture. Correct! True False Question 19 0 / 2 pts The two igneous rock types are: You Answered Felsic & Mafic Regional & Contact Granite & Basalt Correct Answer Extrusive & Intrusive

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Question 20 2 / 2 pts The famous destruction of the Roman city of Pompeii was produced by ________. a large cinder cone burying the city in tephra Correct! a pyroclastic eruption from a composite volcano that buried the city in ash and smothered the people living there a composite volcano erupted lava that buried the city, fossilizing people who were overridden by the fast moving flow Question 21 2 / 2 pts Which of the following is not a significant volcanic hazard? injury or death by inhalation of air heavily laden with volcanic ash a tsunami generated by a massive submarine volcanic eruption Correct! being overrun by a fast moving basaltic lava flow being caught in a river valley and being overcome by a volcanic mudflow/lahar Question 22 2 / 2 pts

Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-ocean ridges. True Correct! False Question 23 2 / 2 pts Volcanic Island Arcs form at convergent plate boundaries. Correct! True False Question 24 2 / 2 pts Although it is relatively common, limestone is an economically important rock type because its major constituent mineral, ________, is used in the production of ________. halite, salt calcite, calcium Correct! calcite, cement

halite, halogen Question 25 2 / 2 pts The Appalachian Mountains are older than the Rocky Mountains. Correct! True False Question 26 2 / 2 pts Volcano A erupts rocks with SiO2 content ranging from 49% to 52% whereas volcano B, 100km away, erupts materials with SiO2 content of 62-68%. Which statement best characterizes these two volcanos? Both volcanos are shield type volcanos that are characterized by quiet eruptions. Correct! Volcano A is probably a shield volcano with typically quiet eruptions, whereas Volcano B is likely a stratovolcano characterized by violent, explosive eruptions. Both volcanos are violent, explosive volcanos that spread ash continent wide. Question 27 2 / 2 pts The average composition of the oceanic crust is thought to approximate that of ________.

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Correct! Basalt Limestone Granite Marble Question 28 2 / 2 pts The ________ explains how our solar system probably formed from a giant cloud of gases and dispersed solid particles. Correct! Nebular Theory Big Bang Theory Question 29 2 / 2 pts The large, flat, featureless portions of the deep-ocean basin are called: Seamounts Trenches

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Correct! Abyssal Plains Oceanic Ridges Question 30 2 / 2 pts The deepest well that has ever been drilled on the earth is ________ deep, about 1/500th of the radius of the earth. 20.7 km Correct! 12.3 km 40.5 km 31.4 km Question 31 2 / 2 pts As the rate of cooling increases, the size of the crystals that form ________. Increases Correct! Decreases

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Question 32 2 / 2 pts A mineral that can be cut, polished, and sold for profit is a gemstone. Correct! True False Question 33 2 / 2 pts ________ refers to the tendency for a foundation material to lose its internal cohesion and fail mechanically during earthquake shaking. Flowage Correct! Liquefaction Motion slip Slurrying Question 34 2 / 2 pts Mount St. Helens and the other Cascade volcanoes are ________. a row of young, active, shield volcanoes built as western North America moved over a hot spot deep in the mantle

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Correct! young, active stratovolcanoes built on a continental margin above a sinking slab of oceanic lithosphere Question 35 2 / 2 pts What type of fold occurs when sedimentary rock layers are folded upward (arched)? Syncline Correct! Anticline Basin Question 36 2 / 2 pts Oceanic crust is less dense than continental crust. True Correct! False Question 37 2 / 2 pts Earth’s magnetic field can reverse (north becomes south – south becomes north). Correct!

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True False Question 38 2 / 2 pts The epicenter of an earthquake is on the surface of the Earth directly above the focus. Correct! True False Question 39 2 / 2 pts A(n) ________ fault has little or no vertical movements of the two blocks. Correct! strike slip normal reverse thrust

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Question 40 2 / 2 pts The distance between a seismological recording station and the earthquake source is determined from the ________. earthquake magnitude length of the seismic record Correct! arrival times of P and S waves intensity of the earthquake Question 41 2 / 2 pts The low-grade metamorphism of shale produces ________. Gneiss Correct! Slate Schist Marble

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Question 42 2 / 2 pts Which of the following energy sources is thought to drive the lateral motions of Earth's lithospheric plates? Correct! export of heat from deep in the mantle to the top of the asthenosphere electrical and magnetic fields localized in the inner core gravitational attractive forces of the Sun and Moon swirling movements of the molten iron particles in the outer core Question 43 2 / 2 pts An igneous rock with a Felsic mineral composition is rich in dark-colored minerals like pyroxene. True Correct! False Question 44 2 / 2 pts Subduction only occurs when oceanic rocks are forced beneath a continent. True

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Correct! False Question 45 2 / 2 pts The moment magnitude earthquake scale is better for measuring the magnitude of very large earthquakes compared to the Richter scale. Correct! True False Question 46 0 / 2 pts Alfred Wegener is credited for the Theory of Plate Tectonics not for the Theory of Continental Drift. You Answered True Correct Answer False Question 47 2 / 2 pts If you are on a beach, you might recognize that a tsunami is approaching because ________. Correct!

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the water will withdraw from the beach farther than usual waves will gradually get higher and higher as the tsunami approaches waves will gradually get closer together and approach the beach faster than normal Question 48 2 / 2 pts Most earthquakes occur within the circum-Atlantic belt. True Correct! False

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exam 1

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