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100+ Free Basque PAU Geology And Environmental Sciences Practice Questions
Basque Country PAU Geology And Environmental Sciences Examination — UPV/EHU (2º Bachillerato 2026) practice questions are available now; exam metadata is being verified.
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2026 Statistics
Key Facts: Basque PAU Geology And Environmental Sciences Exam
90 Minutes
Exam time duration
UPV/EHU PAU Commission
EUR 86.33
Ordinary registration fee
UPV/EHU 2026 Fees
0–10 Scale
Grading scale for Bachillerato and PAU exams
Spanish Ministry of Education
5 Core Blocks
Official syllabus domains
UPV/EHU Syllabus
100 Questions
Practice bank size in OpenExamPrep
OpenExamPrep
Basque Country PAU Geology And Environmental Sciences (UPV/EHU 2026) is a 90-minute university entrance exam assessing 2º Bachillerato syllabus domains.
Sample Basque PAU Geology And Environmental Sciences Practice Questions
Try these sample questions to test your Basque PAU Geology And Environmental Sciences exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which of the following seismic waves cannot travel through liquids, providing evidence for a liquid outer core?
A.P-waves
B.S-waves
C.L-waves
D.R-waves
Explanation: Secondary (S) waves are shear waves that cannot propagate through fluid media. Their absence in the shadow zone beyond 105 degrees from an earthquake epicenter indicates that the Earth's outer core is liquid.
2What type of plate boundary is characterized by the formation of a mid-ocean ridge?
A.Convergent boundary
B.Transform boundary
C.Divergent boundary
D.Collision boundary
Explanation: Divergent plate boundaries occur where tectonic plates move apart. In oceanic lithosphere, this leads to decompression melting of the mantle, generating magma that forms new oceanic crust at mid-ocean ridges.
3Which mineral is a key indicator of high-grade regional metamorphism?
A.Chlorite
B.Biotite
C.Sillimanite
D.Muscovite
Explanation: Sillimanite is an index mineral that forms at high temperatures and pressures, characteristic of high-grade regional metamorphism. It represents the highest metamorphic grade in the sequence of index minerals (chlorite -> biotite -> garnet -> staurolite -> kyanite -> sillimanite).
4The primary cause of the stratospheric ozone depletion is:
A.Increased carbon dioxide emissions
B.Release of chlorofluorocarbons (CFCs)
C.Methane emissions from agriculture
D.Sulfur dioxide from volcanic eruptions
Explanation: Chlorofluorocarbons (CFCs) release chlorine atoms in the stratosphere when exposed to UV radiation. These chlorine atoms catalyze the destruction of ozone molecules, leading to ozone depletion.
5Which renewable energy source depends directly on the gravitational pull of the Moon and the Sun?
A.Geothermal energy
B.Solar energy
C.Tidal energy
D.Wind energy
Explanation: Tidal energy is generated by the rise and fall of ocean tides, which are primarily driven by the gravitational pull of the Moon and, to a lesser extent, the Sun.
6In a folded sequence of sedimentary rocks, if the oldest rocks are found in the core of the fold, the structure is a:
A.Syncline
B.Anticline
C.Monocline
D.Basin
Explanation: An anticline is a type of fold that is arch-like in shape and has its oldest beds at its core. It is formed by compressional stress during tectonic deformation.
7The carrying capacity of an ecosystem refers to:
A.The maximum number of species the ecosystem can support
B.The maximum population size of a species that the environment can sustain indefinitely
C.The total biomass of all producers in the ecosystem
D.The rate at which energy is transferred between trophic levels
Explanation: Carrying capacity is the maximum population size of a biological species that can be sustained by that specific environment, given the food, habitat, water, and other necessities available.
8Which process is a significant natural sink for atmospheric carbon dioxide over geological time scales?
A.Volcanic eruptions
B.Respiration
C.Chemical weathering of silicate rocks
D.Decomposition of organic matter
Explanation: The chemical weathering of silicate rocks consumes atmospheric CO2. The carbon is eventually transported to the oceans and precipitated as carbonate rocks (like limestone), acting as a long-term geological sink.
9In the context of geology and environmental science, what is basaltic magma?
A.high volatile content
B.low viscosity and low silica content
C.explosive eruptions
D.high viscosity
Explanation: Basaltic magma is fundamentally described by low viscosity and low silica content. This concept is critical when studying magmatism.
10In the context of geology and environmental science, what is granitic magma?
A.effusive eruptions
B.high viscosity and high silica content
C.low silica content
D.low viscosity
Explanation: Granitic magma is fundamentally described by high viscosity and high silica content. This concept is critical when studying magmatism.
About the Basque PAU Geology And Environmental Sciences Practice Questions
Verified exam format metadata for Basque Country PAU Geology And Environmental Sciences Examination — UPV/EHU (2º Bachillerato 2026) is pending. The practice questions above remain available while official exam length, timing, passing score, fee, and administrator details are reviewed.