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100+ Free Canary Islands PAU Geology & Env Sci Practice Questions
Canary Islands PAU Geology and Environmental Sciences (Geología y Ciencias Ambientales 2º Bachillerato ULPGC & ULL 2026) practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Canary Islands PAU Geology & Env Sci Exam
COPAU 2026
Official Canary Islands PAU university admission framework
Gobierno de Canarias / ULPGC / ULL
90 Minutes
Duration of the official written exam
COPAU Examination Guide
0–10 Scale
Grading scale requiring minimum 4.0 in Access Phase
Canary Islands PAU Regulations
4 Core Modules
Volcanology, Geomorphology/Hydrogeology, Hazards, Sustainability
2º Bachillerato LOMLOE Curriculum
100
High-quality practice questions in this question bank
OpenExamPrep
The Canary Islands PAU Geology and Environmental Sciences exam tests 2º Bachillerato competencies across volcanic geology, insular hydrogeology, geological risks, trade wind microclimates, and environmental sustainability.
Sample Canary Islands PAU Geology & Env Sci Practice Questions
Try these sample questions to test your Canary Islands PAU Geology & Env Sci exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which tectonic and geodynamic model best explains the age progression of the Canary Islands archipelago from east (Fuerteventura/Lanzarote, ~20 Myr) to west (El Hierro/La Palma, <2 Myr)?
A.A slow-moving African continental rift spreading zone
B.A mantle plume (hotspot) interacting with a slow-moving African oceanic plate
C.A subduction zone dipping beneath the Northwest African continental margin
D.A transform fault system extending directly from the Mid-Atlantic Ridge
Explanation: The mantle plume or hotspot hypothesis proposes that a stationary thermal plume in the deep mantle supplies magma while the African plate moves slowly eastward over it, producing an age-progressive chain of volcanic islands from oldest in the east to youngest in the west.
2During magmatic differentiation in intraplate oceanic volcanoes, what is the evolutionary sequence of volcanic rocks from primitive mantle melt to highly evolved felsic lava?
A.Kimberlite → Carbonatite → Komatiite → Andesite
B.Gabbro → Granodiorite → Granite → Peridotite
C.Rhyolite → Andesite → Dacite → Basalt
D.Alkali Basalt → Trachybasalt (Hawaiite/Mugearite) → Trachyte → Phonolite
Explanation: Canary alkaline magmatism evolves through fractional crystallization in magma chambers, starting from mantle-derived primitive alkali basalts, progressing through intermediate trachybasalts, and yielding highly silica-undersaturated and alkali-rich differentiated endmembers such as trachyte and phonolite.
3What is the primary origin of the 'Complejo Basal' (Basal Complex) exposed in deep erosion windows on Fuerteventura, La Palma, and La Gomera?
A.Metamorphic basement blocks detached from the South American craton
B.Glacial deposits and ancient river gravels lithified during the Quaternary
C.Submarine oceanic basement, plutonic intrusive rocks, and dense sheeted dyke swarms uplifted prior to subaerial island growth
D.Subaerial flood basalt plains erupted during continental rifting
Explanation: The Complejo Basal consists of the uplifted pre-insular stage: Cretaceous oceanic crust, submarine pillow lavas, hyaloclastites, plutonic intrusives (gabbros, pyroxenites, syenites), and dense dyke swarms formed before the island grew above sea level.
4How do basaltic lava flows characterized as 'pahoehoe' differ morphologically and physically from 'aa' (malpaís) lavas?
A.Pahoehoe lavas erupt only during explosive caldera collapses, while aa lavas form in lava domes
B.Pahoehoe lavas form exclusively underwater as pillow structures, while aa lavas form on land
C.Pahoehoe lavas contain over 70% silica, while aa lavas are ultramafic mantle melts
D.Pahoehoe lavas have a smooth, ropy surface and lower viscosity, whereas aa lavas have a rough, jagged, clinkery surface due to higher viscosity and degassing
Explanation: Pahoehoe lava (locally known as lava cordada) flows smoothly with a thin, flexible crust at higher temperatures and lower viscosity. As the lava cools, degasses, and shear stresses increase, it transitions into aa lava (malpaís), creating jagged, spiky clinkery rubble.
5What main structural mechanism accounts for the formation of the Las Cañadas caldera structure on Tenerife?
A.A combination of massive vertical magmatic chamber collapse and gravitational mega-landslides toward the north and south coasts
B.Exclusive surface erosion by river network headward retreat over millions of years
C.Tectonic pull-apart faulting along a continental transform boundary
D.Meteorite impact cratering during the early Pleistocene
Explanation: Las Cañadas caldera is a complex volcanic depression formed by major vertical collapse following large-volume explosive eruptions of phonolitic magma chambers, accompanied by multi-stage gravitational slope failures (mega-landslides).
6During the 2021 Tajogaite eruption on La Palma (Cumbre Vieja rift), what type of volcanic activity was predominantly exhibited?
A.Effusive Ultra-Plinian eruption generating ignimbrite sheets across the whole island
B.Peléan lava dome collapse generating lethal pyroclastic flows
C.Strombolian to phreatomagmatic explosive activity combined with basaltic lava emissions along a fissure system
D.Submarine fissure eruption producing exclusively pillow basalts without ash emission
Explanation: The 2021 Tajogaite eruption was a classic fissure eruption featuring multi-vent Strombolian explosive pulses (ash, lapilli, lava fountains) accompanied by basaltic lava flows and localized phreatomagmatic interactions when groundwater was involved.
7What defines a volcanic 'rift zone' (dorsal volcánica) as observed on islands like Tenerife and El Hierro?
A.A prominent triaxial or coaxial fracture zone along which magma preferentially intrudes as dykes, concentrating cinder cones and fissure eruptions
B.A submarine trench where oceanic crust is subducted into the upper mantle
C.A flat sedimentary basin formed by lacustrine deposition
D.A linear belt of intense compressive folds formed by continental collision
Explanation: Volcanic rift zones (dorsales) are structural lineaments produced by regional gravitational stress and magma pressure. They concentrate dyke intrusions and fissure vents, creating linear ridges (e.g., Pedro Gil, Anaga, Teno on Tenerife; Cumbre Vieja on La Palma).
8Which property of seismic P-waves (primary waves) allows geophysicists to confirm that Earth's outer core is liquid?
A.P-waves travel faster in liquids than in solid mantle peridotite
B.P-waves cannot travel through liquids and stop completely at the mantle-core boundary
C.P-waves propagate through both solids and liquids but experience a sharp velocity drop at the mantle-core boundary due to the lower bulk modulus of liquid outer core iron-nickel alloy
D.P-waves rotate their polarization plane by 90 degrees when encountering liquid phase boundaries
Explanation: P-waves are longitudinal compressional waves capable of traveling through both solids and liquids. At the Gutenberg discontinuity (mantle-core boundary), their velocity drops sharply from ~13.7 km/s to ~8.1 km/s because the liquid outer core lacks shear rigidity and has a lower bulk modulus.
9What type of intrusive volcanic structure forms prominent resistant isolated monoliths like 'Roque Nublo' (Gran Canaria) or 'Roque de Agando' (La Gomera)?
A.Glacial erratic boulders transported during ice ages
B.Extensive horizontal pahoehoe lava sheets
C.Unconsolidated ash cones accumulated by wind action
D.Eroded volcanic necks (pitones) or intrusive plugs made of resistant phonolitic/trachytic lava filling ancient conduit vents
Explanation: Roques or pitones are volcanic neck remnants. Viscous phonolitic or trachytic magma solidified inside the central volcanic conduit; subsequent erosion removed the softer surrounding pyroclastic wall rocks, leaving the hard resistant plug standing as a monolith.
10What fundamental geochemical difference distinguishes oceanic island alkali basalts in the Canary Islands from mid-ocean ridge basalts (MORB)?
A.Canary alkali basalts are enriched in incompatible trace elements and alkalis (Na2O + K2O) relative to silica, reflecting deep plume mantle melting
B.MORB contains 75% silica, whereas alkali basalts contain less than 30% silica
C.Canary basalts are composed entirely of quartz and orthoclase feldspar
D.MORB magmas originate from continental crust melting, while Canary basalts stem from subducted slabs
Explanation: Canary alkali basalts originate from low-degree partial melting of an enriched deep mantle source (mantle plume), yielding higher alkalis ($Na_2O + K_2O$) and incompatible trace elements compared to tholeiitic MORB generated by high-degree shallow asthenospheric melting.
About the Canary Islands PAU Geology & Env Sci Practice Questions
Verified exam format metadata for Canary Islands PAU Geology and Environmental Sciences (Geología y Ciencias Ambientales 2º Bachillerato ULPGC & ULL 2026) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.