Description A volcanic glass (like obsidian) is not considered a mineral because ___________. Grou ...

---

Description A volcanic glass (like obsidian) is not considered a mineral because ___________. Group of answer choices It is not a solid All of these answers are correct It lacks a crystalline structure it is made by organic processes Question 2 3 pts The coalescing (coming together) of rocks, dust, other debris that led to the formation of the Earth is called: Group of answer choices Differentiation Solidification Accretion Lithification Question 33 pts Water with a high salt content is more dense than water with a low salt content. Group of answer choices True False Question 43 pts Rocks that have a lot of SiO2 are usually ______in color and are called _______. Group of answer choices Light; Felsic Dark; Felsic Light; Mafic Dark; Mafic Question 53 pts As water warms it becomes more dense. Group of answer choices True False Question 63 pts The focus of an earthquake is Group of answer choices all of the choices are correct. beneath the earth’s surface, directly under the epicenter. the primary point of rupture in the earth’s crust. located using multiple seismographs. Question 73 pts The largest difference between high and low tide occurs ... Group of answer choices During the spring When the earth and moon are aligned During the winter When the earth, moon, and sun are aligned Question 83 pts Concern about the greenhouse effect stems from Group of answer choices increases in volcanic ash in the air. worldwide cooling observed since the 1920s. all of the choices are correct increases in atmospheric carbon-dioxide levels. Question 93 pts Seismic waves which travel only along the Earth's exterior Group of answer choices all of the above P-waves S-waves surface waves Question 103 pts What causes the lowering of the water table? Group of answer choices Withdrawal of groundwater exceeds recharge Saltwater intrusion in coastal areas Compaction of aquifers during earthquakes Excessive land subsidence Question 113 pts Warming ocean temperatures may result in which of the following? Group of answer choices All of these answers are correct A decrease in phytoplankton productivity An increase in "extreme" weather patterns Increased rates of evaporation Question 123 pts Surface collapse in a region of karst topography produces Group of answer choices sinkholes deltas all of the above caverns Question 133 pts As water evaporates from the oceans... Group of answer choices Oxygen-18 is preferentially removed Oxygen-16 is preferentially removed Oxygen-16 and Oxygen-18 are removed in equal quantities Question 143 pts Magnetic Polarity “Stripes” on the sea-floor occur because ________. Group of answer choices The type of rock forming on the sea-floor changes periodically Magnetic minerals in rocks on the seafloor record the periodic flip of the poles of reasons that are not understood; It’s a geologic mystery The rock on the seafloor get older as you move away from a ridge Question 153 pts Magma with the greatest capacity for trapping gases is _______. Group of answer choices mafic intermediate felsic (silicic) ultramafic Question 163 pts Liquefaction is Group of answer choices flooding caused by dam failure resulting from an earthquake. flooding of coastal areas due to tectonic subsidence. a quicksand-like condition arising in some wet soils during earthquakes. flooding caused by tsunamis. Question 173 pts Earthquake-related hazards include all of the following except Group of answer choices landslides. tsunamis. liquefaction. release of radon gas. Question 183 pts New Orleans is susceptible to future flooding because... Group of answer choices It is surrounded on 3 sides by water It is in a hurricane prone area It is at or below sea-level All of these answers are correct It is built on loose sediment Question 193 pts Concerns about greenhouse-effect heating relate not only to possible changes in temperature, but also to possible changes in precipitation patterns. Group of answer choices TRUE FALSE Question 203 pts When two continental lithospheric plates converge, what type of plate boundary will result? Group of answer choices Collisional Plate boundary A continental hotspot Subduction Zone Transform Plate boundary Question 213 pts In 1989 as in 1906, earthquake damage in San Francisco was most severe in areas underlain by fill, as in the Marina district. Group of answer choices TRUE FALSE Question 223 pts Which of the following will cause relative sea-level change? Group of answer choices Melting of glaciers as global temperature increases Subsidence of land due to pumping of ground water Uplift of the land near the ocean as a result of plate tectonics All of these answers are correct Question 233 pts A very symmetric volcanic structure built of pyroclastics is a __________. Group of answer choices volcanic dome. shield volcano. nuée ardente. cinder cone. Question 243 pts The largest volume of fresh water is stored in which reservoir? Group of answer choices lakes and rivers the atmosphere groundwater glaciers Question 253 pts A disadvantage of desalination is: Group of answer choices permits only high salinity water as feed for filtration allows use of brackish groundwater requires a lot of energy for distillation cannot be done with solar energy Question 263 pts The time elapsed between the arrivals of the P- and S-waves at a seismograph is in indication of the Group of answer choices distance between the epicenter and the seismograph amount of ground motion magnitude intensity Question 273 pts Darcy's Law Group of answer choices is independent of the permeability of the material determines the discharge through an aquifer does not at all resemble the expression for stream discharge quantifies how much recharge there is to an aquifer Question 283 pts Porosity is that portion of a geologic material where groundwater can be stored. Group of answer choices True False Question 293 pts A greenhouse gas in one that Group of answer choices traps radiation from the sun and warms the atmosphere all of the above provides plants with the carbon required for growth reflects incoming solar energy back into space Question 303 pts The effects of an earthquake on humans and their structures are measured as the Group of answer choices rate of tectonic creep intensity Richter magnitude magnetic inclination Question 313 pts Ocean circulation is driven by _________ and ________. Group of answer choices Wind; Storms Density differences; Carbon content Wind; density differences Wind; Earth's rotation Question 323 pts Alfred Wegener’s hypothesis of continental drift was not accepted by the scientific community because: Group of answer choices He had no evidence to support his theory He was not a scientist and therefore not trusted by the scientific community He never tried to present his theory to the scientific community He could not supply a mechanism to explain his theory Question 333 pts Removal of natural vegetation can result in which of the following? Group of answer choices increased flooding increased soil erosion increased surface runoff All of these answers are correct Question 343 pts A circular lowering of the water table around a well is Group of answer choices a cone of depression a beginning of a sinkhole found only in confined aquifers the result of land subsidence Question 353 pts An igneous rock that formed as magma cooled below the surface of the Earth is called ________ and will have ________crystals than one that formed as lava cooled above the Earth's surface. Group of answer choices Volcanic; Larger Plutonic; Larger Plutonic; Smaller Volcanic; smaller Question 363 pts Plate boundaries are located, in part, by the occurrence of linear belts of volcanoes and earthquakes. Group of answer choices FALSE TRUE Question 373 pts Which process removes carbon dioxide from the atmosphere? Group of answer choices decay of organic matter combustion of fossil fuels photosynthesis respiration Question 383 pts Which is NOT true of permeability? Group of answer choices depends on both the geologic material and the type of fluid Reflects how readily fluid flows through a material Is part of the distinction between aquifers and aquitards Is greater in shale than in sandstone Question 393 pts Clastic sedimentary rocks are those that formed from Group of answer choices All of these answers are correct the application of heat and pressure to other rocks solidification of a magma the products of the breakup of other rocks Question 403 pts Flood plains result from which of the following? Group of answer choices sediment deposition by floods lateral erosion meander migration all of the above Question 413 pts The lowest point that a stream flows to is called _______ Group of answer choices base level meander size flood frequency channel pattern Question 423 pts According to plate-tectonic theory, plates of rigid, elastic __________ move over a weak layer below. Group of answer choices mantle lithosphere asthenosphere core Question 433 pts Uncertainty in projecting probable greenhouse-effect heating arises from uncertainty about Group of answer choices climates are very complex uncertainty in CO2 removed by geologic processes the relationship between CO2 produced, and resultant atmospheric CO2 levels. all of the choices are correct Question 443 pts Land subsidence results from an increase in porosity in the geologic materials. Group of answer choices True False Question 453 pts What is the Big Bang Theory? Group of answer choices a discredited theory that states that our universe maintains the same size over time the theory that the entire universe has been expanding for 14 Billion Years The theory that th e universe has been expanding for ~4.6 Billion years a theory that says that the Earth’s formation was the result of a loud sound Question 463 pts Deep in the crust, at elevated temperatures, rocks may behave plastically and undergo folding or flow. Group of answer choices FALSE TRUE Question 473 pts What is the name for the drowned edge of a continent? Group of answer choices Continental Shelf Continental Slope Continental Rise Abyssal plain Question 483 pts Most stratovolcanoes are located at which plate boundary? Group of answer choices divergent subduction zone transform collisional Question 493 pts Convection in the mantle occurs because____________. Group of answer choices the mantle is liquid and can easily flow there are temperature differences that result in variations in density in the mantle the lithospheric plates cause the mantle to move there are compositional differences that result in density differences in the mantle Question 503 pts A seismic gap is Group of answer choices locked and therefore accumulating stress. a section of a fault that is undergoing creep not very dangerous because it only slips a few meters at a time. not of much concern because it is seismically quiet. Question 513 pts Due in part to the increase in Carbon Dioxide in the atmosphere, global temperatures will continue to increase and our oceans will become more acidic leading to the deterioration of coral reefs and many marine organisms. Group of answer choices True False Question 523 pts The outer edge of a meander, where material is being eroded, is a(n) ____________. Group of answer choices point bar oxbow cut bank channel Question 533 pts A volcano built of many thin flows of fluid lava is a Group of answer choices subduction-zone volcano. cinder cone. volcanic dome. shield volcano. Question 543 pts Magmas rich in silica Group of answer choices all of the choices are correct. may contain up to about 75 percent SiO2 by weight. are viscous and do not flow easily. tend to inhibit passage of gas that tries to escape through it. result in more explosive eruptions than low-silica magmas. Question 553 pts A hot, rapidly moving cloud of gas and ash produced by a volcanic eruption is known as a Group of answer choices pyroclastic flow composite flow. rhyolite. lahar. Question 56 35 pts List and describe 5 things you can (and are willing to do) that will contribute to a reduction in anthropogenic climate change. Create a numbered list of your answers. Your answers should be specific to you and should be actionable, meaning you have indicated specifically how you will accomplish this or what it will look like in your life. Be thoughtful and honest in your response. Ideally, you are creating a list of things that you will actually implement!