Identify the best answer. Answers are on the last page.
- The classical planets in order from the Sun are:
- Mercury, Venus, Mars, Earth, Jupiter, Saturn, Neptune, Uranus
- Jupiter, Venus, Mars, Earth, Mercury, Saturn, Neptune, Uranus
- Mars, Venus, , Earth, Jupiter, Saturn, Mercury Neptune, Uranus
- Venus, Mars, Mercury, Earth, Jupiter, Saturn, Neptune, Uranus
- None of the above
- Nuclear fusion
- Is the source of Sun’s energy
- Occurs when the nucleus of an atom fissions and releases energy
- Radiates throughout the universe
- Is the reason that Jupiter has no solid surface
- All the above
- Mercury, Venus, and Mars are different than Earth because:
- They are closer to the Sun.
- Earth has volcanoes and they don’t.
- Earth currently has liquid water and they don’t.
- Earth is the only planet with ice this close to the Sun.
- None of the above.
- The largest storm in the Solar System is found on which planet?
- Uranus
- Earth
- Mars
- Jupiter
- Pluto
- The basic structure of the Solar System is described as
- the ecliptic.
- the Oort Cloud.
- inner terrestrial and outer gaseous planets.
- the asteroid filter.
- rotating nuclear fission.
- Why do the outer planets and their moons consist mostly of ice and gas while the inner planets are made up mostly of rock and metal?
- The solar wind stripped the inner planets of volatile compounds.
- The outer gas giants had greater volcanism, which produced large quantities of gases.
- Gravity sucked the gases from the inner planets into the Sun.
- Solar heat is so limited in the outer portion of the Solar System that solids turn into gas.
- All of the above.
- The dwarf planets are:
- Mercury, Earth, and Mars
- Ceres, Pluto, Haumea, and Mercury
- Eris, Ceres, Pluto, Haumea, and Makemake
- There are no “dwarf” planets, only moons
- None of the above
- What is planetesimal accretion?
- The collapse of the Kuiper Belt into the core region.
- Collisions of bits of ice, gas, and dust grew into planetesimals, and planetary embryos, and eventually planets.
- Jupiter, with its huge mass, broke into pieces that eventually became the major planets.
- The solar wind tore the young planets into smaller pieces called planetesimals, and these later grew together to form the present planets.
- All of the above.
- Which of the following is the name of a hypothesis explaining the origin of the Solar System?
- planetesimal collision
- nebular expansion
- solar nebula
- nuclear fusion
- solar objects
- The major gases in the Solar System include
- Ice, argon, methane, and carbon.
- Water, carbon dioxide, ammonia, helium, hydrogen, carbon monoxide
- Lithium, carbon dioxide, carbon, hydrogen, carbon monoxide
- Ammonia, oxygen, helium, hydrogen, carbon monoxide, and water
- Water, hydrogen sulfide, ammonia, helium, lithium, carbon monoxide
- Comets are made of:
- Molten rock
- Ice and mineral grains
- Gas and ice
- Rock and a thin atmosphere of water
- None of the above
- Extraterrestrial impacts
- Probably occurred in two waves
- May have delivered water to Earth and an early atmosphere
- May have originated at the Oort cloud and Kuiper belt regions
- Produced the scars on the Moons surface
- All the above
- The primary source of Earths heat is a combination of
- Extraterrestrial impacts, gravitational energy, radioactivity
- Nuclear fusion, volcanism, compression
- Compression, volcanism, solar wind
- Solar wind, radioactivity, gravitational energy
- None of the above
- During the Hadean Era, which of the following is thought to have occurred?
- Growth of the modern seas
- Formation of modern continents
- The “iron catastrophe”
- Origin of life on Earth
- All the above
- How does the chemical differentiation of Earth today reflect the influence of the “iron catastrophe”?
- There is more iron in the core than in the crust.
- The lower lithosphere stores most of Earth’s iron.
- Much of Earth’s iron has escaped as a result of extraterrestrial impacts.
- Iron is largely rare on Earth
- None of the above
- What are the principal differences between the average chemistry of the crust and the average chemistry of Earth as a whole?
- The crust is relatively enriched in less dense compounds and relatively depleted in iron.
- The crust is relatively enriched in magnesium and relatively depleted in oxygen.
- Earth as a whole has a greater abundance of silicon than does the crust.
- The crust contains a greater abundance of heavier elements than does Earth as a whole.
- None of the above
- How is Earth organized?
- Earth has an inner and outer core, a mantle, and a crust.
- Earth has an inner mantle and an outer lithosphere, with a liquid inner core.
- Earth’s crust rests atop the liquid mantle and the solid outer core.
- The inner core is solid, the mantle is solid, and the crust is solid under the continents and they are all liquid under the oceans.
- None of the above
- Subduction occurs:
- When one plate crashes into another
- When a lithospheric plate is recycled into Earth’s interior
- When a plate enters the inner core
- When a continent is recycled beneath an overriding plate
- During orogenesis
- Oceanic crust
- Is formed by asteroid impact.
- Is enriched in iron and magnesium compared to continental crust.
- Forms from sea salt.
- Is made of metamorphic rock.
- None of the above
- Magnetic reversals are caused by:
- Lunar gravitational effects.
- Changes in the rate at which Earth orbits the Sun.
- Impacts of extraterrestrial objects.
- Unknown causes.
- Faster subduction rates across Earth
- Evidence that the polarity of Earth’s geomagnetic field has reversed in the past is found:
- As magnetic striping in volcanic arcs
- In magnetic reversals recorded by iron minerals in oceanic crust
- In accretionary prisms
- Where magma develops above a subducting slab
- All of the above
- Three plate boundaries, defined by relative motion, are:
- Converging, diverging, and lateral.
- Convergent, divergent, and transform.
- Strike slip, hotspot, and spreading center.
- Spreading center, transform, and divergent.
- All of the above
- The three types of convergent plate boundaries are:
- Convergent, divergent, and volcanic.
- Ocean-ocean, ocean-continent, and continent-continent.
- Subducting, divergent, and shearing.
- Igneous, sedimentary, and metamorphic.
- None of the above.
- At ocean-ocean convergent boundaries:
- Younger, less dense crust tends to subduct
- Island arcs tend to subduct
- Transform faults will typically develop
- There are rarely earthquakes
- None of the above.
- The Himalayan Mountains are an example of:
- Extraterrestrial impact.
- Continent-ocean convergence.
- A subduction zone.
- Continent-continent convergence.
- All the above
- At the San Andreas transform fault,
- Lithosphere is subducted as one plate dives below another.
- New lithosphere is formed as two plates pull away from each other.
- Decompression melting recycles old crust.
- The Pacific Plate moves to the north relative to the North American Plate
- All of the above.
- Earthquakes occur at:
- Divergent plate boundaries.
- Ocean-ocean convergent plate boundaries.
- Ocean-continent plate boundaries.
- Transform boundaries.
- All of the above
- The rock cycle is a concept that
- Has no relationship to plate tectonics.
- Is not a well-accepted hypothesis.
- Describes the recycling of rock.
- Was first described only two decades ago.
- All of the above
- Which of the following is part of the definition of a mineral?
- Liquid
- Electrically charged
- Inorganic
- Synthetic
- None of the above
- Many minerals are useful in everyday life. Some examples include:
- Feldspar and quartz
- Clay and gypsum
- Graphite and chalcopyrite
- Copper and titanium
- All of the above
- To quickly identify a mineral sample, geologists use
- Physical size
- Color
- Physical properties
- Laboratory analysis
- None of the above
- “Fool’s gold” is
- Hematite
- Calcite
- Pyrite
- Native gold
- None of the above
- One of the isotopes of the element carbon (atomic number 6) has a mass number of 13. How many neutrons does this isotope have in its nucleus?
- 5
- 6
- 7
- 14
- None of the above
- What are formed when sodium ions and chlorine ions combine to produce NaCl?
- Ionic bonds
- Covalent bonds
- Organic structures
- Isotopes
- Native elements
- What property causes the mineral biotite to break into flat sheets?
- Its density
- Its electrical charge
- Its crystalline structure
- Its hardness
- None of the above
- Silicates are constructed by
- Carbon and hydrogen.
- Iron and oxygen.
- Silica and feldspar.
- Silicon and oxygen.
- None of the above
- Single substitution occurs during crystallization because
- Neutral compounds attract ions.
- The number of leftover ions must be balanced.
- A charged compound is formed.
- Ions of similar size can substitute for one another.
- To form a dense compound.
- The two most abundant elements in the crust form
- Oxides.
- Sulfates.
- Silicates.
- Carbonates.
- Halides
- The important rock-forming minerals include
- Feldspars, biotite, and goingouttonight.
- Calcite, feldspars, biotite, and amphiboles.
- Amphiboles, feldspars, quartz, and rutile.
- Rutile, amphibole, calcite, and garnet.
- Quartz, feldspar, granite, basalt
- The silica compound takes the shape of
- A rectangle.
- A tetrahedron.
- A polygon.
- A polymer.
- Magma
- Plagioclase feldspar is a
- Mineral element.
- Type of carbon compound.
- Mineral
- All of the above
- Type of quartz
- What is igneous rock?
- Rock produced by melting
- Rock composed of sediments
- Rock derived from pressure
- Rock that mixes the mantle and crust
- None of the above
- Most melting in the mantle is a result of
- High-pressure melting.
- Decompression melting.
- Sudden increases in temperature.
- Turbulent mantle plumes.
- None of the above
- In most cases, magma differentiation produces magma with higher ______content than the parent magma.
- iron
- silica
- calcium
- mineral
- None of the above
- Magma that is cooling undergoes
- Crystallization.
- Recrystallization.
- Partial melting.
- Refractionation.
- Erosion
- Bowen’s reaction series describes
- the sequence in which minerals melt in rapidly heating magma.
- the sequence in which plutons are formed in migrating magma.
- the sequence in which rocks are formed in average continental crust.
- The sequence in which minerals crystallize in cooling magma.
- None of the above
- The order of mineral crystallization is typically
- felsic, mafic, intermediate, ultramafic.
- felsic, intermediate, mafic, ultramafic.
- ultramafic, mafic, intermediate, felsic.
- mafic, ultramafic, felsic, intermediate.
- All of the above
- Mafic means______; felsic means______.
- high in iron, magnesium, and calcium; high in silicon and oxygen
- high in calcium and magnesium; high in silicon, oxygen, and iron
- high in iron and oxygen; high in silicon, calcium, and magnesium
- high in silicon, oxygen, and calcium; high in iron and magnesium
- Volcanic; plutonic
- The composition of dark igneous rock is likely to be
- Felsic
- Mafic
- Rhyolitic
- Plutonic
- None of the above
- Which of the following best describes igneous evolution?
- All rocks evolved as a result of partial melting.
- All rocks evolved as a result of hotspot volcanism.
- All rocks evolved as a result of differentiation of recent metamorphic rocks.
- All rocks are a result of meteorite impacts.
- None of the above
- Which of the following is correct?
- Granite is formed at spreading centers.
- Andesite is formed at subduction zones.
- Basalt is a mineral commonly in granite.
- Gabbro is formed by chemical weathering.
- None of the above
- Volcanic arcs are primarily composed of
- granite and phyllite.
- gabbro and gneiss.
- basalt and pyroxenite.
- andesite and diorite.
- All of the above
- Plutons are
- magma bodies within the deep crust.
- intrusive igneous rocks in the lower mantle.
- magma bodies produced by volcanism.
- igneous rocks produced by fissure eruptions.
- made by contact metamorphism
- Plate tectonics is important to igneous evolution because:
- Plate tectonics formed the first igneous rock billions of years ago.
- Melting does not occur at plate boundaries
- Mantle plumes only occur at spreading centers
- Plate tectonics provides for many igneous environments
- Plate tectonics does not allow for partial melting
- Spheroidal weathering is caused by
- sand abrasion in running water.
- crystal growth in cold climates.
- chemical weathering of angular rocks.
- a combination of slaking and mass wasting.
- None of the above
- The chemical interaction of oxygen with other substances is known as
- Dissolution
- Hydrolysis
- Saturation
- Oxidation
- None of the above
- The most important form of chemical weathering of silicate minerals is
- Crystal growth
- Slaking
- Hydrolysis
- Dissolution
- Frost wedging
- Insoluble residues are:
- Minerals produced by weathering
- Dissolved compounds resulting from chemical weathering
- Soils that are rich in organics
- All the above
- Typically dissolved in hydraulic acid
- The tendency of silicates to weather on Earth’s surface is predicted by
- Mineral texture
- Rock color and environment of deposition
- Bowens Reaction Series
- Tectonic setting
- Their roundness
- The variable that most affect the weathering process are rock composition and ______.
- Topography
- Surface area
- Living things
- Climate
- None of these
- Which of the following statements about soil erosion is true?
- It is a form of pollution that affects biological communities.
- It is a major problem affecting millions of acres of cropland.
- It threatens to impact food production.
- It takes centuries to make soil and only minutes to erode it
- All the above
- Karst topography is the result of
- Soil erosion
- Biological weathering of silicate rock
- Chemical weathering of carbonate rock
- Spheroidal weathering
- All the above
- Aluminum ore comes from
- Spheroidal weathering
- Tundra environments
- Humid tropical settings
- Physical weathering
- All the above
- Weathering consists of
- Erosion, tectonics, and uplift.
- Chemical, biological, and physical degradation.
- crust age, chemistry and sedimentary minerals
- Sedimentary quartz, hematite, and sillimanite.
- None of the above
- Geologists study sedimentary rocks because
- They provide a record of Earth’s history.
- They are sources of fossil fuels.
- They may contain important mineral resources.
- They may contain fossils, providing a history of life including human evolution
- All of the above
- Sediments produced by the action of living organisms are called
- Chemical sediments.
- Physical sediments.
- Clastic sediments.
- Biogenic sediments.
- None of the above
- Well-sorted and well-rounded sand grains indicate that sediment
- Came from a nearby source area.
- Was deposited at the location where it was found.
- Traveled from a distant source area.
- Have not been influenced by weathering
- None of the above
- Lithification refers to
- the set of natural processes that turn sediment into rock.
- the processes of erosion and tectonic uplift.
- the effects of chemical weathering.
- erosion
- None of the above
- After being created by weathering, sediments may
- Experience more weathering
- Combine with chemical sediments
- Combine with biogenic sediments
- Experience sorting and abrasion
- All of the above
- The sedimentary cycle refers to
- The continual erosion of sediments from mountainsides.
- The process of recycling sediments.
- The formation of rock through compaction of sediments.
- The formation of rock through chemical precipitation of sediments.
- None of the above
- Which of the following statements is correct?
- Clastic sedimentary rocks include sandstone.
- Biochemical sedimentary rocks include Andesite
- Biochemical sedimentary rocks include shale and mudstone.
- Clastic sedimentary rock includes chert and coal.
- All of the above
- Biochemical sedimentary rocks may form by
- Evaporation
- Erosion
- Metamorphism
- Floods
- None of the above
- Rock fragments are known as
- Clasts
- Bioclastic sediments.
- Evaporites
- Natural cements.
- None of the above
- Particle sizes are described using the following terms
- Sand, gravel, lithic fragments, and natural cements.
- Gravel, sand, silt, and clay.
- Conglomerate, sandstone, arkose, and shale.
- Abraded, sorted, rounded, and spherical.
- High grade and low grade
- Organisms play a significant role in the origin of _____ sedimentary rock.
- Clastic
- Biogenic
- Chemical
- Lithologic
- None of the above
- Sedimentary rocks are classified by
- Mineralogy and fossils.
- Cementation and compaction.
- Environment of precipitation and environment of deposition.
- Composition and texture.
- All the above
- Primary sedimentary structures are
- Physical features of a rock related to the environment of deposition.
- Physical features of a rock related to the process of cementation.
- Chemical features of a rock produced by the motion of water and wind.
- Sediment forms produced by biogenic processes.
- Related to plate convergence
- Metamorphic rocks are formed by increased
- Pressure and cementation.
- Heat and melting.
- Pressure and heat.
- Cooling and solidification.
- None of the above
- Metamorphism occurs when
- Minerals partially melt and quickly recrystallize.
- Recrystallization occurs in the solid state.
- Loose sediments grow new crystals that cement grains together.
- Igneous minerals have solidified.
- None of the above
- What type of metamorphism is local in extent and results from the rise in temperature in country rock surrounding an igneous intrusion?
- Regional
- Contact
- Burial
- Metasomatism
- Plutonism
- The metamorphic index minerals are:
- Kaolinite, garnet, quartz, chlorite, biotite, and schist.
- Chlorite, garnet, sillimanite, hornfels, schist, and muscovite.
- Slate, phyllite, schist, chlorite, greenschist, and gneiss.
- Chlorite, muscovite, biotite, garnet, and sillimanite.
- Gneiss, slate, chlorite, quartz
- Foliated metamorphic rocks, in order of increasing metamorphic grade, are:
- Clay, chlorite, muscovite, biotite, garnet, and sillimanite.
- Marble, quartzite, mylonite, and gneiss.
- Slate, phyllite, schist, and gneiss.
- Shale, slate, quartzite, marble, and schist.
- Gneiss, slate, schist, chlorite, and phyllite
- Marble is related to limestone in the same way that
- Basalt is related to granite.
- Slate is related to shale.
- Gravel is related to siltstone.
- Gneiss is related to marble.
- Sandstone is related to basalt.
- Which of the following statements about foliated rocks is correct?
- They reflect the influence of directed stress in the crust.
- They are usually formed within intruded country rock.
- They are the product of metasomatism.
- They rarely develop at convergent margins.
- None of the above
- Which of the following tectonic processes is (are) most important to metamorphism?
- Plate rotation
- Sediment accumulation and erosion
- Subduction and plate convergence
- Paleomagnetic wandering
- Plate tectonics is not related to metamorphism
- Common contact metamorphic rocks include
- Zeolite, hornfels, and shale.
- Slate, gneiss, and marble.
- Quartzite, marble
- Basalt, granulite, and blueschist.
- None of the above
- Regional metamorphosis of shale occurs in the following sequence:
- Zeolite, gneiss, slate
- Slate, phyllite, schist, gneiss
- Gneiss, marble, schist, hornfels
- Greenschist, slate, hornfels, basalt
- None of the above
Answers