The Geosphere Practice Test

These questions are part of the practice quiz. Start practicing

• Which term refers to the general process of down-slope movement of material due to gravity, including various forms such as slides and creep?
• The rigid layer made up of the uppermost part of the mantle and the crust is called the ...
• Which rock type forms from cooling magma below the surface?
• Shield volcanoes vs Stratovolcanoes: Which statement is true?
• Which boundary exists when two plates move away from each other?
• The complete sequence of soil horizons from the surface downward is called the?
• Which layer is primarily responsible for Earth's magnetic field?
• A mixture of mineral particles and organic material that covers the land and supports terrestrial plants is called what?
• What is a large mass of ice that moves slowly over land?
• Which property is NOT typically used to identify minerals in the field?
• Which radiometric dating method is most appropriate for dating very young organic material?
• What term refers to a natural environment that absorbs and stores more carbon dioxide than it releases?
• Which term describes the movement of carbon from the nonliving environment into living things and back?
• Which statement best summarizes the evidence for plate tectonics?
• What is the role of the Sun's energy and Earth's albedo in climate, and how can geologic processes influence climate?
• The sudden movement of rock and soil down a slope.
• How do soils develop from weathered rock and what are typical soil horizons?
• Which statement correctly compares continental crust to oceanic crust in terms of composition, thickness, and density?
• Solution process with water as the solvent.
• Which process converts sediments into solid rock by compaction or cementation?
• The thinner, more dense, younger crust forming the ocean floor is known as the ...
• What is the difference between contact metamorphism and regional metamorphism?
• Which term designates minerals that are built from silicon-oxygen tetrahedra and include quartz and feldspars?
• Which of the following best describes the role of cementation in lithification?
• Which factor influences amplification and hazard levels in a seismic region?
• Which process involves the chemical combination of oxygen with minerals?
• The region of the mantle beneath the lithosphere where convection occurs due to low resistance to flow is known as the ...
• Which process is described by water causing minerals to change through addition of water, often weakening the rock?
• The concept that fossils appear in a definite, recognizable sequence and can be used to correlate rock units is known as?
• Describe how desert landforms such as arches, fins, and mesas form through weathering and erosion.
• Which term refers to the rigid outer layer consisting of the uppermost mantle and the crust?
• Which statement best defines isostatic rebound after glacial retreat?
• Stratovolcano hazards: Stratovolcanoes are associated with higher explosivity due to higher viscosity magma. True or false?
• Describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color.
• Which statement correctly identifies the major layers of Earth's interior and their primary characteristics?
• A solid made up of crystals in which particles are arranged in a regular, repeating pattern is called a what?
• Which term describes a process in which salt crystals form within rock pores as seawater evaporates, widening the crevices?
• Which ancient supercontinent did Alfred Wegener identify as having once joined Earth's landmasses?
• Describes magma or igneous rock that is rich in feldspars and silica and that is generally light in color.
• Which term describes a solid that has a crystal structure and a definite chemical composition?
• Which term describes a rock texture with two crystal sizes, larger crystals embedded in a finer-grained matrix?
• When a mineral breaks in an irregular way, the break is described as:
• What describes the transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere?
• Which principle states that younger rock layers lie above older rock layers in an undisturbed sequence?
• Which statement accurately describes foliated metamorphic rocks?
• A chemical change in which a substance combines with oxygen, as when iron oxidizes, forming rust.
• Desertification is typically associated with all of the following EXCEPT
• Which feature is typically associated with divergent boundaries?
• Magmatic differentiation and magma viscosity influence eruption style. Which statement is correct?
• Which theory states that Earth's lithosphere is broken into moving slabs driven by mantle motions?
• What does a cross-cutting relationship help establish?
• The portion of the Earth's crust that mainly contains granite, is less dense than oceanic crust, and is 20–50 km thick is called the ...
• What term describes the movement of dirt and dust by wind from one location to another?
• Cross-cutting relationships indicate the relative ages of rocks and features. If a fault cuts across existing rock layers, what can be inferred?
• What is the difference between weathering and erosion, and how do they contribute to landscape change?
• The downslope movement of rock, regolith, and soil under the direct influence of gravity.
• The metamorphic rock texture in which mineral grains are arranged in planes or bands is:
• What features form in karst landscapes due to groundwater dissolving limestone?
• Mantle convection moves tectonic plates by which mechanism?
• Which term describes a metamorphic texture with minerals arranged in layers or bands?
• Which consequence is most associated with soil compaction?
• Which boundary is characterized by plates sliding past one another horizontally?
• Which statement best describes index fossils?
• Which rock type forms from the remains of plants and animals pressed and cemented together?
• Desertification is defined as degradation of land, especially in semiarid areas, caused primarily by what?
• Which boundary is associated with the creation of new crust as plates move apart?
• Which statement best compares mechanical and chemical weathering?
• What magma composition is typical for shield volcanoes?
• Which crust forms the ocean floor and is thinner and more dense?
• Which landform is typically formed at divergent boundaries?
• What are the three main types of unconformities?
• Which crust type is primarily granitic and less dense than oceanic crust?
• A rock that forms when magma cools and solidifies is:
• Which cycle includes processes such as nitrogen fixation, nitrification, and denitrification?
• Disintegration resulting from plants and animals.
• The splitting of a mineral along smooth, flat surfaces is called:
• How do earthquakes occur with respect to fault zones?
• The driving force behind tectonic plate movement is attributed to convection in which Earth layer?
• A layer of molten iron and nickel surrounding the inner core is the ...
• The principle of original horizontality asserts that sedimentary layers are deposited in what orientation?
• What term describes the circular movement of heated fluid rising and cooled fluid sinking?
• Which process is most directly involved in lithification besides compaction?
• What is the process called when oceanic crust sinks beneath a deep-ocean trench at a convergent boundary?
• Earthquake magnitudes and intensities: Which statement accurately contrasts magnitude and intensity?
• Which statement correctly differentiates alluvial fans and deltas in sediment transport and deposition environments?
• A type of mass movement that occurs when a mass of material moves down a curved slope.
• Explain the concept of fossil succession and how it can be used to correlate rock layers across regions.
• Which term best describes a surface covered with a pavement of coarse gravel formed by wind erosion?
• Mass per unit volume is best defined as:
• In which climate zone is desertification most commonly observed?
• What best describes isotopes, half-life, and decay curves in radiometric dating?
• Mass per unit volume is defined as:
• How do geologic maps convey information about rock units and structures?
• What plate boundary is defined as two plates moving toward each other?
• Which statement best describes the role of ocean basins in geologic processes?
• The process by which wind, water, ice, or gravity transports soil and sediment from one location to another.
• What are physical and chemical weathering processes, and how do they differ?
• Which human activity is commonly cited as a driver of desertification?
• An unconformity represents what in the geological record?
• Which statement is correct regarding cross-cutting relationships?
• Why are zircon crystals particularly useful for dating metamorphic rocks?
• Which layer lies directly below the crust and is characterized by relatively low resistance to plastic flow, where convection is thought to occur?
• What does a trench indicate in plate tectonics?
• How do igneous rocks form at different tectonic settings? (divergent vs convergent margins)
• All the vertical layers or horizons that make up a soil in a particular place are known as the what?
• Erosion and deposition describe what processes?
• Explain metamorphism and the difference between foliated and nonfoliated metamorphic rocks.
• Which property is defined as the ratio of an object's weight to the weight of an equal volume of water?
• A recurring mantle current where hotter, less dense material rises, cools, and sinks again, driving tectonic plate movement, is called ...
• What term describes soil that has been pressed down tightly, removing air pockets and preventing water penetration?
• Which process is associated with mid-ocean ridges in plate tectonics?
• Which factor controls the development of cave networks in karst landscapes?
• A dense sphere of solid iron and nickel at the center of the Earth is the ...
• The breaking down of rocks and other materials on the Earth's surface.
• What property measures a mineral's resistance to scratching and is commonly assessed with the Mohs hardness scale?
• Which form of movement occurs slowly, causing gradual deformation and movement of material downslope?
• Which scale is used to compare mineral hardness by assessing scratch resistance?
• The slow downhill movement of weathered rock material.
• Which of the following is a direct ocean-floor evidence for past plate tectonics?
• Alfred Wegener proposed that Earth's landmasses once formed a single supercontinent called Pangaea. What is this theory commonly called?
• A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition is called a what?
• A very weak acid formed in solution when carbon dioxide dissolves in water.
• The ratio of a mineral's weight to the weight of an equal volume of water is called:
• Weathering rates depend on climate, rock type, and surface area; which statement is true?
• Which processes characterize glacial erosion?
• Texture developed when crystals are unable to form; Rapid rate of cooling prevents crystals from forming.
• What is the thin, solid outermost layer of the Earth called?
• Coarse-grained, crystals are large enough to be seen w/out a microscope, formed by slow cooling (intrusive).
• Which statement correctly describes the major types of sedimentary rocks and how they form?
• Plutons, batholiths, dikes, and sills are all types of intrusive igneous bodies; which one is a vertical intrusion?
• The term for the way a mineral reflects light from its surface is:
• Why is oceanic crust continually recycled via subduction?
• Differentiate the three main rock types in terms of origin and typical textures.
• Which type of boundary is characterized by horizontal sliding?
• Which landscape type is common in rainy regions with limestone near the surface and features caverns, sinkholes, and valleys?
• Which term denotes the natural environment that supports plant life and is made up of mineral particles and organic matter?
• Which of the following is a key line of evidence for past plate tectonics observable in the ocean floor?
• Which statement correctly defines porosity and permeability?
• Which statement best describes how frost wedging accelerates mechanical weathering in temperate climates?
• Which statement best describes soil compaction?
• A layer of coarse pebbles and gravel formed when wind removes finer material is called?
• Which rock type forms from the cooling and solidification of molten material?
• A rock that forms from an existing rock altered by heat, pressure, or chemical reactions is:
• Minerals that contain silicon and oxygen and usually one or more other elements.
• The term Desertification refers to degradation of land in semiarid regions caused primarily by which factor?
• Which term refers to a light-colored igneous rock due to high silica and feldspar content?
• Which term best describes the long-term degradation of land due to human actions in semiarid regions?
• What is a drumlin?
• Which process involves sea spray or salty groundwater penetrating crevices and pore spaces in rocks, leading to salt crystal growth that enlarges the crevices?
• What is the mechanical weathering process characterized by the splitting off of slab-like sheets of rock?
• What is the definition of half-life in radiometric dating?
• Which boundary type occurs when two plates slide past each other in opposite directions?
• Difference between P-waves and S-waves: Which statement is correct?
• Which rock type forms by lithification of weathered sediments?
• The mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices.
• Which of the following describes a direct effect of soil compaction on plant growth?
• Index fossils are important because they are...
• Where does a delta primarily form?
• Rapid cooling at earth's surface results in tiny mineral crystals that can only be seen under a microscope.
• A molten mixture of rock-forming substances, gases, and water from the mantle is:
• The layer of hot, solid material between the Earth's crust and core is the ...
• Which glacial feature is formed by deposited material, and often marks the extent of a glacier?
• Isostasy describes the gravitational balance that explains how crust rises or sinks in response to loads. Which statement best describes its effect on mountain ranges?
• Which term describes a dark-colored igneous rock rich in magnesium and iron?
• In karst landscapes, which process forms caves through the dissolution of rocks by groundwater?
• Which concept describes the flow of carbon through the atmosphere, biosphere, oceans, and geosphere?
• What best describes the lithosphere and the asthenosphere and their roles in plate tectonics?
• Which process is specifically the removal of sand and dust by wind, leaving a surface composed of coarser material?
• Common seismic hazards include which of the following?
• At which boundary do two continental plates collide to form tall mountain ranges like the Himalayas?
• Which statement correctly describes how meteoric water infiltration leads to cave formation?
• Inclusions: If a rock contains fragments of another rock, what can be inferred about the age of the embedded fragments relative to the host rock?
• What are the three main types of plate boundaries and the primary geologic features associated with each?
• Describing an igneous rock composed of both large and small crystals.
• Explain the rock cycle and how rocks transition from one type to another.
• Which term refers to the process by which sediments become solid rock?
• Explain how isotopic dating using zircon crystals constrains the age of metamorphic rocks.
• Lithification occurs through which of the following processes?
• Which term refers to a coarse-grained intrusive igneous rock, where individual crystals are visible to the naked eye?
• A rock formed when particles from other rocks or remains of plants and animals are pressed and cemented together is: