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Key Facts: PAU Geología y Ciencias Ambientales (Cantabria) Exam

UNICAN 2026

University of Cantabria PAU Organising Commission authority

Universidad de Cantabria (UNICAN)

90 Mins

Official examination duration

UNICAN PAU Regulations

Min 4.0

Minimum Access Phase score required to calculate university admission mark

Cantabria University Admission Regulations

5 Blocks

Internal Geodynamics, External Geodynamics, Earth Materials, Environmental Systems, Hazards & Sustainability

LOMLOE 2º Bachillerato Syllabus

100

Practice questions available in this OpenExamPrep bank

OpenExamPrep

The Cantabria PAU Geology and Environmental Sciences exam evaluates core geological literacy, Earth systems science, and environmental sustainability competencies for 2º Bachillerato students. This English-language MCQ bank is a study adaptation of the knowledge behind the official written exam, not a format simulation.

Sample PAU Geología y Ciencias Ambientales (Cantabria) Practice Questions

Try these sample questions to review concepts for the PAU Geología y Ciencias Ambientales (Cantabria) exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What behavior characterizes P (primary or longitudinal) seismic waves as they travel through Earth’s interior?
A.They propagate through both solids and liquids, compressing and dilating material in the travel direction.
B.They travel only through solids and their speed drops to zero on entering the outer core.
C.They are shear waves vibrating perpendicular to travel direction and are the slowest waves.
D.They are exclusively surface waves causing the greatest structural damage in earthquakes.
Explanation: P waves are compressional (longitudinal) waves that can travel through solids and liquids via periodic volume/density changes, arriving first at seismographs.
2In the dynamic model of Earth’s interior, how is the lithosphere defined relative to the asthenosphere?
A.The lithosphere is a purely metallic Fe–Ni layer, while the asthenosphere is anhydrous silicates.
B.The lithosphere comprises crust plus part of the upper mantle with rigid, brittle behavior, floating on a ductile, deformable asthenosphere.
C.The lithosphere is only emergent continental crust, while the asthenosphere is all subducted oceanic lithosphere.
D.The lithosphere lies from 2900 km depth to Earth’s center, separated by the Gutenberg discontinuity.
Explanation: Dynamically, the lithosphere is the rigid outer shell of crust plus lithospheric upper mantle, resting on the weaker, ductile asthenosphere that enables plate motion.
3Which seismic fact unequivocally shows that Earth’s outer core is liquid?
A.Sudden P-wave acceleration at 35 km depth at the Moho.
B.Total reflection of Rayleigh waves at submarine continental margins.
C.An S-wave shadow zone between about 103° and 142° from the epicenter because S waves cannot travel through liquids.
D.Doubling of P-wave amplitude in the lower mantle due to molten-iron viscosity.
Explanation: S waves are shear waves needing rigidity; they stop at the mantle–core boundary (~2900 km), producing a wide S-wave shadow that proves the outer core is liquid.
4What characterized the Variscan (Hercynian) Orogeny in Iberia’s geological evolution?
A.Recent opening of the Cantabrian Sea in the late Neogene by Iberia separating from Europe.
B.Build-up of Quaternary deltas in the Bay of Biscay after Pleistocene glacial retreat.
C.Formation of extensional grabens creating the Duero and Ebro foreland basins.
D.Late Paleozoic (Carboniferous–Permian) continental collision that consolidated the Iberian Massif as part of Pangaea.
Explanation: The Variscan/Hercynian orogeny at the end of the Paleozoic built the igneous–metamorphic basement of the Iberian Massif (including the Cantabrian Zone) within Pangaea.
5At a convergent subduction boundary, what is the Benioff (Wadati–Benioff) plane?
A.The inclined plane along which earthquake foci concentrate from friction of the descending slab.
B.The horizontal surface separating oceanic and continental lithosphere at asymmetric ridges.
C.A dextral transform tear linking an accretionary prism to an intraplate hotspot.
D.The zone of pillow-lava accumulation on a mid-ocean ridge crest.
Explanation: The Wadati–Benioff zone is the inclined seismic belt marking the subducting oceanic plate’s path into the mantle, with foci deepening landward.
6How did paleomagnetic anomaly studies of ocean floors support seafloor-spreading theory?
A.They showed marine basalt lacks magnetic minerals such as magnetite.
B.They revealed magnetization stripes symmetric and parallel to ridges with alternating normal and reversed polarity.
C.They proved oceanic crust age is uniform worldwide (~4 Ga).
D.They confirmed continental drift is driven solely by lunar/solar gravity.
Explanation: Vine and Matthews (1963) showed ridge basalts record geomagnetic polarity; symmetric stripes parallel to ridges record spreading over time.
7What is the main genesis of intraplate hotspot volcanism such as the Canary Islands or Hawaii?
A.Direct tectonic friction between colliding continental plates.
B.Dehydration of clay minerals in deep trenches.
C.Ascent of deep-mantle thermal plumes (possibly from the D″ layer) causing melting by overheating.
D.Gravitational collapse of large salt domes in back-arc basins.
Explanation: Hotspots arise from mantle plumes: narrow hot columns rising from deep mantle that melt near the lithosphere, building volcanic chains as plates move.
8During Mesozoic–Cenozoic time the Cantabrian Mountains underwent complex tectonics. Which geodynamic event drove thrusting of Cantabrian marine lithosphere and Alpine orogenic uplift?
A.Separation of South America and opening of the South Atlantic.
B.A late Cretaceous asteroid impact in the Bay of Biscay.
C.Late Triassic extensional rifting and high-T metamorphism alone.
D.N–S convergence between Eurasia and Iberia with counterclockwise Iberian rotation and partial closing of the Bay of Biscay.
Explanation: Alpine structure of the Cantabrian range formed during Iberia–Eurasia convergence after Cretaceous extensional opening of the Bay of Biscay, then compressional inversion and uplift.
9In magmatic differentiation by fractional crystallization, how do silicates generally behave as magma temperature falls?
A.High-T ferromagnesian minerals (e.g., olivine) crystallize first, leaving a progressively more felsic, silica-rich residual melt.
B.Quartz and felsic micas crystallize first, concentrating Fe–Mg in a final pegmatitic phase.
C.Magma composition stays identical throughout cooling with no change in crystal proportions.
D.Plagioclase evolves from sodic (albite) to calcic (anorthite) as temperature falls.
Explanation: Bowen’s reaction series shows high-T ferromagnesians and calcic plagioclase crystallize early; residual melt becomes more silicic/felsic as those crystals are removed.
10In which geodynamic setting does high-pressure, low-temperature metamorphism (blueschist and eclogite facies) develop?
A.Thermal contact aureoles around shallow post-orogenic granite plutons.
B.Subduction trenches, where cold oceanic lithosphere descends rapidly, raising pressure faster than temperature equilibrates.
C.Mid-ocean ridges due to high-T seawater hydrothermal circulation.
D.Subsiding sedimentary basins under purely burial metamorphism.
Explanation: HP/LT metamorphism is diagnostic of subduction: cold slabs are buried deep quickly, producing blueschists/eclogites before heating catches up.

About the PAU Geología y Ciencias Ambientales (Cantabria) Exam

The Cantabria PAU Geology and Environmental Sciences (Geología y Ciencias Ambientales 2º Bachillerato UNICAN) practice bank provides comprehensive preparation for students sitting the Spanish university entrance exam in Cantabria. The curriculum tests critical understanding of internal and external geological processes, plate tectonics, mineralogy and petrology, regional Cantabrian geology (Urgonian platforms, Picos de Europa karstification, Flysch, Hercynian/Alpine orogeny), environmental systems, hydrologic resources, energy transition, natural hazards, climate change, and environmental impact assessment.

Exam sponsor: University of Cantabria (UNICAN) PAU Organising Commission. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

90-minute examination divided into 5 core thematic units (20% weight each): Internal Geodynamics & Plate Tectonics, External Geodynamics & Surface Processes, Earth Materials, Environmental Systems & Resources, and Environmental Hazards & Sustainability.

Time Limit

90 minutes

Passing Score

Marked on a 0–10 scale. Minimum 4.0 required in Access Phase.

Exam / Certification Fees

EUR 71.09 base registration fee for PAU Access Phase.

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20%

Internal Geodynamics & Plate Tectonics

Seismology, Earth interior structure, plate tectonics, magmatism, metamorphism, orogeny, and structural evolution of the Cantabrian Range.

20%

External Geodynamics & Surface Processes

Physical and chemical weathering, karstification (Picos de Europa), fluvial dynamics, coastal geomorphology (estuaries, beaches, rasas), glaciation, and edaphogenesis.

20%

Earth Materials: Minerals, Igneous, Metamorphic & Sedimentary Rocks

Crystallography, mineral properties, petrogenesis of igneous, sedimentary, and metamorphic rocks, stratigraphy, bioestratigraphy, and Cantabrian mineral resources.

20%

Environmental Systems, Resources & Energy Transition

Systems theory, biogeochemical cycles, water resources and karst aquifers, renewable energy (onshore/offshore wind), energy transition, and circular economy.

20%

Environmental Hazards, Climate Change & Sustainability

Geological hazards (floods, mass movements, seismic/volcanic risk), greenhouse dynamics, climate change impacts, EIA procedure, and sustainable development.

Preparing for the PAU Geología y Ciencias Ambientales (Cantabria) Exam

What You Need to Know

  • Passing score: Marked on a 0–10 scale. Minimum 4.0 required in Access Phase.
  • Assessment: 90-minute examination divided into 5 core thematic units (20% weight each): Internal Geodynamics & Plate Tectonics, External Geodynamics & Surface Processes, Earth Materials, Environmental Systems & Resources, and Environmental Hazards & Sustainability.
  • Time limit: 90 minutes
  • Exam / certification fees: EUR 71.09 base registration fee for PAU Access Phase. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

PAU Geología y Ciencias Ambientales (Cantabria): Suggested Study Strategy

1Review seismic wave dynamics (P vs. S waves) and the Mohorovičić and Gutenberg discontinuities.
2Understand regional Cantabrian geology: Urgonian limestone platforms, Picos de Europa karstic dissolution, and Flysch turbidites.
3Master mineral identification using the Mohs hardness scale, silicate classification, and Bowen's reaction series.
4Study environmental impact assessment steps (EsIA vs. DIA), coastal dynamics (Flecha de El Puntal, rasas), and renewable energy transition mechanisms.

Frequently Asked Questions

Is this practice bank in the same format as the real Cantabria PAU exam?

No, and it is important to know the difference. The official Cantabria PAU paper, organised by the University of Cantabria (UNICAN), is a 90-minute examination sat in Spanish (or in the target language for foreign-language papers) and built around open and semi-constructed written tasks that must be answered and justified in full. Under Real Decreto 534/2024, open and semi-constructed responses must account for at least 70% of every paper, so the real exam is not a multiple-choice test. This bank is an English-language multiple-choice study adaptation of the official 2º Bachillerato syllabus — not an official translation, not a past paper, and not a simulation of the exam format. Use it to drill the underlying knowledge and reasoning quickly, then practise the official written, oral, graphic, practical, or performance tasks separately, because that is what the examiners actually mark.

What is the fee for taking the PAU exam in Cantabria (UNICAN 2026)?

The base registration fee for the PAU Access Phase is EUR 71.09, as established by the Universidad de Cantabria (UNICAN) PAU Organising Commission.

What passing score is required on the PAU Geology and Environmental Sciences exam in Cantabria?

The exam is marked on a 0–10 scale. A minimum score of 4.0 is required in the Access Phase to calculate the university admission mark.

What is the duration of the PAU Geología y Ciencias Ambientales exam?

The examination duration is 90 minutes.

Which university administers the PAU in Cantabria?

The exam is organized by the Universidad de Cantabria (UNICAN) PAU Organising Commission.