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Key Facts: Andalusia PAU Geology and Environmental Sciences Exam

90 min

Exam Duration

Distrito Único Andaluz

0–10

Grading Scale

Junta de Andalucía

4.0 / 10

Minimum Access Phase Score

Distrito Único Andaluz

EUR 58.70

Base Registration Fee

Junta de Andalucía 2026

The Andalusia PAU Geology and Environmental Sciences exam evaluates 2nd Bachillerato students over a 90-minute session. Grades are on a 0–10 scale, with a minimum 4.0 required in the Access Phase to calculate the university admission mark (60% Bachillerato GPA + 40% PAU). Registration costs EUR 58.70 base fee in Andalusia. Note: Our interactive practice material is an English-language MCQ study adaptation of the 2026 official Distrito Único Andaluz curriculum.

Sample Andalusia PAU Geology and Environmental Sciences Practice Questions

Try these sample questions to review concepts for the Andalusia PAU Geology and Environmental Sciences exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which type of tectonic plate boundary is characterized by plates moving apart from each other, resulting in the creation of new oceanic lithosphere?
A.Convergent boundary
B.Divergent boundary
C.Transform boundary
D.Passive margin
Explanation: Divergent boundaries occur where tectonic plates move away from one another, allowing upwelling mantle magma to cool and solidify into new oceanic crust at mid-ocean ridges. Convergent boundaries involve plate collision or subduction, while transform boundaries involve horizontal sliding without crust creation or destruction. Passive margins are transitions between continental and oceanic crust within a single plate.
2By scientific definition, which of the following criteria must a substance meet to be classified as a mineral?
A.Synthetic, organic, liquid, with a variable chemical composition
B.Naturally occurring, inorganic, solid, with a definite chemical composition and ordered internal crystalline structure
C.Organic, solid, amorphous, produced exclusively by biological organisms
D.Naturally occurring, liquid, non-crystalline, composed of organic carbon compounds
Explanation: A mineral is defined as a naturally occurring, inorganic solid with a definite chemical composition (or bounded range) and an ordered internal atomic arrangement (crystalline structure). Synthetic materials, liquids like liquid water, and organic substances such as coal or amber do not qualify as true minerals.
3What is the primary operational difference between mechanical weathering and chemical weathering?
A.Mechanical weathering alters the chemical composition of rocks, while chemical weathering only breaks them physically
B.Mechanical weathering breaks rocks into smaller fragments without changing their mineral chemistry, whereas chemical weathering alters the internal mineral composition
C.Mechanical weathering occurs only underground, while chemical weathering occurs only on mountain peaks
D.Mechanical weathering requires liquid water, whereas chemical weathering occurs exclusively in completely dry desert climates
Explanation: Mechanical (physical) weathering disaggregates rocks into smaller pieces (increasing surface area) without modifying mineral stoichiometry (e.g., frost wedging). Chemical weathering involves chemical reactions (e.g., hydrolysis, oxidation, dissolution) that transform primary minerals into secondary minerals or soluble ions.
4In an ecological trophic pyramid, which organisms form the foundational base (first trophic level) by converting inorganic solar or chemical energy into biomass?
A.Primary consumers (herbivores)
B.Primary producers (autotrophs)
C.Secondary consumers (carnivores)
D.Decomposers (saprotrophs)
Explanation: Primary producers (autotrophs, such as photosynthetic plants, algae, and chemosynthetic bacteria) occupy the first trophic level. They synthesize organic molecules from inorganic carbon dioxide and water using light or chemical energy, supporting all higher heterotrophic levels.
5Which of the following atmospheric pollutants is classified as a primary pollutant rather than a secondary pollutant?
A.Ground-level ozone (O3)
B.Sulfur dioxide (SO2)
C.Peroxyacetyl nitrate (PAN)
D.Sulfuric acid mist (H2SO4)
Explanation: Primary pollutants are emitted directly from identifiable sources into the atmosphere (e.g., SO2 from burning sulfur-rich fossil fuels, CO, NOx, particulate soot). Secondary pollutants (such as tropospheric ozone, PAN, and H2SO4) form in the atmosphere via chemical or photochemical reactions among primary pollutants and atmospheric gases.
6Which energy source is classified as a non-renewable natural resource because its geological formation rate is infinitely slower than human consumption rates?
A.Solar radiation
B.Coal
C.Wind energy
D.Biomass from sustainable forestry
Explanation: Coal is a non-renewable fossil fuel formed from compressed ancient plant materials over tens to hundreds of millions of years. Because its replenishment rate is geological, current extraction depletes finite reserves. Solar, wind, and sustainably managed biomass are renewable resources regenerated on human timescales.
7How do primary seismic waves (P-waves) differ fundamentally from secondary seismic waves (S-waves) during earthquake propagation?
A.P-waves are transverse waves that move only through solids, while S-waves are longitudinal compressional waves
B.P-waves are longitudinal compressional waves that travel through solids, liquids, and gases, whereas S-waves are transverse shear waves that travel only through solids
C.P-waves travel much slower than S-waves and cause the most surface destruction
D.P-waves are electromagnetic radiation, while S-waves are sound waves
Explanation: Primary (P) waves are compressional (longitudinal) body waves that move particle motion parallel to wave propagation and can travel through all states of matter. Secondary (S) waves are shear (transverse) body waves with particle motion perpendicular to wave direction; because fluids lack shear strength, S-waves cannot travel through liquids or gases.
8In integrated waste management, what is the most environmentally preferred action according to the '3 Rs' waste hierarchy (Reduce, Reuse, Recycle)?
A.Recycling materials into secondary products
B.Reducing waste generation at the source
C.Reusing products for their original purpose
D.Incinerating waste for energy recovery
Explanation: Source reduction (reducing waste generation) tops the waste management hierarchy because it eliminates resource extraction, manufacturing energy, transportation emissions, and disposal burdens entirely before waste is ever created. Reuse is second, recycling third, and energy recovery/landfilling are lower-priority options.
9What prominent seafloor topographic feature is formed where an oceanic tectonic plate subducts beneath an adjacent plate?
A.Mid-ocean ridge
B.Deep-ocean trench
C.Abyssal plain
D.Continental rise
Explanation: Deep-ocean trenches (such as the Mariana Trench or Peru-Chile Trench) are long, narrow topographic depressions formed where a flexing oceanic lithospheric plate plunges downward into the mantle at a convergent subduction zone.
10On Mohs scale of mineral hardness, which mineral serves as the benchmark for a hardness rating of 10 (the hardest known natural mineral)?
A.Talc
B.Quartz
C.Corundum
D.Diamond
Explanation: Diamond defines hardness level 10 on Mohs relative hardness scale due to its dense, 3D covalent network of carbon atoms. Talc represents level 1 (softest), Quartz is level 7, and Corundum is level 9.

About the Andalusia PAU Geology and Environmental Sciences Exam

The Andalusia PAU (Prueba de Acceso a la Universidad) Geology and Environmental Sciences exam (Geología y Ciencias Ambientales) is the official university entrance assessment administered across Andalusia by the Distrito Único Andaluz / Comisión Interuniversitaria de Andalucía for 2nd Bachillerato students. Please note: The practice questions in this local question bank represent an English-language multiple-choice question (MCQ) study adaptation specifically designed to help English-speaking students and international candidates master the 2026 curriculum concepts (plate tectonics, petrology, geomorphology, ecosystems, pollution, energy resources, natural risks, and sustainability) required for the Andalusian PAU exam.

Exam sponsor: Distrito Único Andaluz / Comisión Interuniversitaria de Andalucía. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Question count not published by the exam provider

Time Limit

90 minutes (1.5 hours)

Passing Score

Marked on a 0–10 scale. Minimum 4.0 required in Access Phase to combine with Bachillerato GPA (60% Bachillerato + 40% PAU >= 5.0 to pass).

Exam / Certification Fees

EUR 58.70 base registration fee for PAU Access Phase (or ~14.70 € per subject in voluntary admission phase) set by Junta de Andalucía.

Exam sponsor website

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

Official sources

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.

15%

Plate Tectonics & Internal Geodynamics

Lithospheric plate boundaries, seismic wave propagation, mantle convection dynamics, magma generation, orogenic cycles, and paleomagnetism.

15%

Mineralogy & Petrology

Crystal systems, silicate chemistry, mineral identification, igneous rock textures, sedimentary environments, and metamorphic facies.

15%

External Earth Processes & Geomorphology

Weathering mechanisms, soil erosion, river dynamics, karstic dissolution landforms, glacial processes, and coastal erosion.

15%

Ecosystems & Biosphere Dynamics

Trophic efficiency, ecological pyramids, biogeochemical cycling (C, N, P), ecological succession, and biodiversity metrics.

15%

Environmental Impacts & Pollution

Anthropogenic air pollutants, photochemical smog, greenhouse dynamics, ocean acidification, freshwater eutrophication, and ecotoxicology.

10%

Natural Resources & Energy

Renewable vs non-renewable energy systems, fossil fuel extraction, nuclear power, mineral ore deposits, and groundwater hydrology.

10%

Natural Hazards & Risk Management

Geological hazards (earthquakes, volcanoes, mass wasting), flooding, risk evaluation models (Hazard x Vulnerability x Exposure), and mitigation planning.

5%

Waste Management & Sustainability

Municipal and industrial waste treatment, sanitary landfills, incineration, circular economy models, and Environmental Impact Assessment (EIA) procedures.

Preparing for the Andalusia PAU Geology and Environmental Sciences Exam

What You Need to Know

  • Passing score: Marked on a 0–10 scale. Minimum 4.0 required in Access Phase to combine with Bachillerato GPA (60% Bachillerato + 40% PAU >= 5.0 to pass).
  • Assessment: Question count not published by the exam provider
  • Time limit: 90 minutes (1.5 hours)
  • Exam / certification fees: EUR 58.70 base registration fee for PAU Access Phase (or ~14.70 € per subject in voluntary admission phase) set by Junta de Andalucía. 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

Andalusia PAU Geology and Environmental Sciences: Suggested Study Strategy

1Master the key geological formulas and risk assessment equations: Risk = Hazard x Vulnerability x Exposure.
2Understand the geological processes shaping the Iberian Peninsula and Andalusia, such as Betic Cordillera tectonics, karstic landscapes (e.g., Torcal de Antequera), and coastal dynamics.
3Review biogeochemical cycles (carbon, nitrogen, phosphorus) and the mechanisms of anthropogenic disruption such as eutrophication and global warming.
4Practice interpreting geological cross-sections, rock cycle diagrams, and soil profiles.
5Differentiate clearly between primary and secondary pollutants, as well as renewable and non-renewable resources.

Frequently Asked Questions

What is the format of the official Andalusia PAU Geology and Environmental Sciences exam?

The official exam set by the Distrito Único Andaluz lasts 90 minutes and contains structured open-ended questions, short analytical problems, and diagram/map interpretations based on the 2nd Bachillerato curriculum. Note that the questions in this practice portal are an English-language MCQ study adaptation formatted for self-assessment and conceptual mastery.

How is the PAU grade calculated for university admission in Andalusia?

The PAU mark is scored from 0 to 10 points. If taken in the compulsory Access Phase (Fase de Acceso), a minimum score of 4.0 is required to calculate the final admission grade, which blends 60% Bachillerato average grade + 40% PAU Access Phase mark (must be >= 5.0 total). Students can also take it in the Voluntary Phase (Fase de Admisión) to raise their grade up to 14 points.

Are these practice questions presented in English?

Yes. While the official Andalusian PAU exam is administered in Spanish, this practice question bank is an English-language multiple-choice study adaptation designed to assist bilingual students, international school candidates, and learners reviewing core geological and environmental science concepts.

What topics are covered in the 2026 Geology and Environmental Sciences curriculum?

The curriculum covers eight core domains: Plate Tectonics & Internal Geodynamics, Mineralogy & Petrology, External Processes & Geomorphology, Ecosystems & Biosphere Dynamics, Environmental Impacts & Pollution, Natural Resources & Energy, Natural Hazards & Risk Management, and Waste Management & Sustainability.