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Basque PAU Geography study materials
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Basque PAU Geography practice questions

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Question 1Maps, statistics, spatial analysis and fieldwork

On a map, the ratio 1:50,000 is an example of which type of scale?

  1. Verbal scale
  2. Graphic (bar) scale
  3. Nominal scale
  4. Representative fraction scale Correct answer.

Explanation

A representative fraction (RF) expresses scale as a ratio such as 1:50,000, meaning one unit on the map equals 50,000 of the same units on the ground. It is unitless, so it works for any measurement system. A verbal scale states the relationship in words, and a graphic scale uses a marked bar.

Question 2Physical geography and earth-surface processes

A deep ocean trench, frequent earthquakes, and a volcanic mountain arc are most characteristic of which plate boundary?

  1. Divergent boundary
  2. Transform boundary
  3. Hotspot far from any boundary
  4. Convergent (subduction) boundary Correct answer.

Explanation

At a convergent boundary where an oceanic plate subducts beneath another plate, a deep trench forms at the subduction line, and melting of the descending slab feeds a volcanic arc. The Andes and the Japanese island arc are examples.

Question 3Climate systems and environmental change

Which statement about the Equator's climate is most accurate?

  1. It experiences four distinct temperate seasons
  2. It is dominated by polar high pressure and aridity
  3. It has the largest annual temperature range on Earth
  4. It receives relatively consistent, high solar energy year-round, producing warm temperatures Correct answer.

Explanation

Near the Equator the Sun's rays strike at a high angle throughout the year, delivering consistently high insolation. This produces warm temperatures with small annual variation; in humid equatorial regions it also produces year-round rainfall and rainforest vegetation.

Question 4Rivers, coasts and catchment water accounting

In a developing river meander bend, where do lateral erosion and sediment deposition predominantly take place?

  1. Erosion on the inner convex bank; Deposition on the outer concave bank
  2. Erosion on the outer concave bank; Deposition on the inner convex bank (slip-off slope) Correct answer.
  3. Erosion across both banks equally; Deposition only on the river bed centre
  4. Deposition along the outer bank; Zero erosion anywhere along the bend

Explanation

In a meander, helicoidal water flow travels fastest on the outside of the bend (outer concave bank), creating lateral erosion and forming a steep river cliff. Water flows slowest on the inside of the bend (inner convex bank), reducing energy and depositing sand/gravel to form a gently sloping slip-off slope (point bar).

Question 5Population, cities, economic location and development

In the demographic transition model, a country with high birth rates and rapidly declining death rates, producing very high population growth, is in which stage?

  1. Stage 1
  2. Stage 4
  3. Stage 5
  4. Stage 2 Correct answer.

Explanation

Stage 2 of the demographic transition model features continued high birth rates but sharply falling death rates due to improvements in food supply, sanitation, and medicine. This gap produces the most rapid natural population increase.

Question 6Resources, environment and sustainability

Overdrawing groundwater from an aquifer faster than it recharges most directly leads to

  1. falling water tables, well failure, and possible land subsidence Correct answer.
  2. rising water tables and flooding
  3. increased rainfall in the region
  4. the formation of new mountains

Explanation

When groundwater is pumped faster than natural recharge, the water table drops, wells can run dry, pumping costs rise, and in some areas the land surface subsides. This is a major sustainability concern for aquifers like the Ogallala.

Question 7Regional comparison and territorial scales

A region develops specialty fruit farming because of unique climate, brand reputation, and transport to cities. This best illustrates:

  1. Using regional comparative advantages Correct answer.
  2. Ignoring all market demand
  3. A purely random land-use choice
  4. The absence of human-environment interaction

Explanation

Regional development often builds on local physical and human advantages. Climate, branding, and market access combine to create a competitive specialty sector.

Question 8Physical geography and earth-surface processes

Which morphostructural unit serves as a mountain transition zone between the Pyrenees to the east and the Cantabrian Mountains (Cordillera Cantábrica) to the west?

  1. The Basque Mountains (Montes Vascos) Correct answer.
  2. The Iberian System (Sistema Ibérico)
  3. The Central System (Sistema Central)
  4. The Baetic System (Sistemas Béticos)

Explanation

The Basque Mountains form a geomorphological bridge connecting the Pyrenean fold belt with the Cantabrian mountain range. They feature moderate altitudes, complex folding, and extensive limestone karst landscapes across Euskadi.

Question 9Physical geography and earth-surface processes

Which lithological domain predominates in the mountain massifs of Euskadi, creating prominent karst landforms such as poljes, sinkholes, and caves?

  1. Siliceous domain (granites and quartzites)
  2. Calcareous domain (limestones) Correct answer.
  3. Clayey domain (clays and marls)
  4. Volcanic domain (basalts)

Explanation

The relief of the Basque Mountains is overwhelmingly calcareous, consisting of Mesozoic limestones. Dissolution of calcium carbonate by rain and groundwater produces typical karst landforms like dolines, caves, and lapies.

Question 10Physical geography and earth-surface processes

What is the highest mountain peak in the Basque Autonomous Community, standing at 1,551 meters within the Aizkorri massif?

  1. Mount Gorbeia
  2. Mount Anboto
  3. Aitxuri (Aitzuri) Correct answer.
  4. Txindoki

Explanation

Aitxuri (or Aitzuri), located in the Aizkorri range in Gipuzkoa, is the highest summit in the Basque Autonomous Community at 1,551 meters above sea level.

Question 11Physical geography and earth-surface processes

What coastal geological formation, prominently exposed along the Gipuzkoa shoreline between Zumaia and Deba, consists of rhythmic alternating layers of hard and soft sedimentary rock exposed by marine erosion?

  1. Tombolo
  2. Delta
  3. Albufera
  4. Flysch Correct answer.

Explanation

Flysch consists of alternating layers of hard (sandstone or limestone) and soft (shale or marl) sedimentary rock strata created by deep-sea turbidity currents. Differential coastal erosion creates striking horizontal wave-cut platforms and vertical cliff faces.

Question 12Physical geography and earth-surface processes

How do Basque rias (such as the Ría del Nervión or Ría de Gernika) differ morphologically from the Galician Rías Baixas?

  1. Basque rias are narrower, shorter, and flanked by steep coastal mountains due to the proximity of the Basque range to the coastline. Correct answer.
  2. Basque rias were carved by alpine glaciers rather than submerged river valleys.
  3. Basque rias extend inland for over 60 kilometers across flat alluvial plains.
  4. Basque rias lack semi-diurnal ocean tides and remain entirely freshwater environments.

Explanation

Basque rias are flooded river valleys formed where short, steep rivers flow directly into the Cantabrian Sea. Because coastal mountains sit very close to the shore, Basque rias are shorter and narrower than the deep, sprawling Galician Rías Baixas.

Question 13Physical geography and earth-surface processes

Which major sedimentary basin bounds the southern section of the Basque Country in the province of Álava (Araba)?

  1. The Duero Basin (Depresión del Duero)
  2. The Ebro Basin (Depresión del Ebro) Correct answer.
  3. The Guadalquivir Basin (Depresión del Guadalquivir)
  4. The Tagus Basin (Depresión del Tajo)

Explanation

Southern Álava, particularly the Rioja Alavesa region along the Ebro River valley, forms part of the northwestern margin of the Ebro Sedimentary Basin (Depresión del Ebro).

Question 14Physical geography and earth-surface processes

Which geographic sector of the Iberian Peninsula is dominated by Paleozoic crystalline rocks (granites, slates, and quartzites), forming 'Siliceous Spain'?

  1. The eastern Mediterranean coastline and Balearic Islands
  2. The central Ebro depression and South Meseta tertiary basins
  3. The western third of the peninsula, including Galicia, western Castilla y León, Extremadura, and the Central System Correct answer.
  4. The Sub-Baetic and Penibaetic ranges of Andalusia

Explanation

Siliceous Spain corresponds to the ancient Hercynian basement (Macizo Ibérico) occupying western Spain. It features hard, impermeable rocks like granites, slates, and quartzites that form block mountains and undulating peneplains.

Question 15Physical geography and earth-surface processes

Which characteristic erosional landform develops in Clayey Spain (España Arcillosa) when torrential rains strike unprotected, soft sedimentary terrain?

  1. Lapies and sinkholes (dolinas)
  2. Basaltic column formations
  3. Granite tors and blockfields
  4. Badlands and gullies (cárcavas) Correct answer.

Explanation

In Clayey Spain, rainfall easily erodes soft clays and marls lacking vegetation cover. Torrential downpours cut deep, steep-sided channels called gullies (cárcavas), generating badlands topography.

Question 16Physical geography and earth-surface processes

Where is volcanic lithology primarily concentrated in Spanish national geography?

  1. The Canary Islands, with minor continental enclaves in Olot, Cabo de Gata, and Campo de Calatrava Correct answer.
  2. The Pyrenean axial zone
  3. The Cantabrian Mountains and Basque coast
  4. The Central System range

Explanation

Volcanic rocks in Spain are overwhelmingly concentrated in the Canary Archipelago, an oceanic volcanic chain. Minor mainland volcanic areas exist in Cabo de Gata (Almería), Campo de Calatrava (Ciudad Real), and Olot (Girona).

Question 17Physical geography and earth-surface processes

Which atmospheric action center moves northward in summer to bring warm, dry, and stable weather conditions to most of the Iberian Peninsula?

  1. The Icelandic Low (Borrasca de Islandia)
  2. The Azores High (Anticiclón de las Azores) Correct answer.
  3. The Thermal Low of North Africa
  4. The Siberian Anticyclone

Explanation

The Azores Anticyclone shifts northward during summer, blocking Atlantic mid-latitude storms and causing dry, hot, and stable weather over Spain.

Question 18Physical geography and earth-surface processes

Which atmospheric mechanism is responsible for bringing frequent low-pressure systems and heavy precipitation to Atlantic and Cantabrian Spain during autumn and winter?

  1. Tropical maritime air masses from the Gulf of Mexico
  2. Northeast Trade Winds (Vientos Alisios)
  3. The Polar Front and the path of the Jet Stream Correct answer.
  4. The Mediterranean thermal low

Explanation

The Polar Front marks the boundary between polar cold air and tropical warm air. In autumn and winter, the Jet Stream shifts south, directing a succession of humid frontal depressions across Northern Spain.

Question 19Physical geography and earth-surface processes

What are the key climatic parameters defining the coastal strip of Euskadi (Bizkaia and Gipuzkoa)?

  1. Subtropical temperatures year-round with autumn monsoon rains
  2. Scanty annual rainfall (<350 mm), hot summers exceeding 35°C, and frequent winter frosts
  3. Severe summer drought, high thermal amplitude (>20°C), and snow cover for four months
  4. Abundant annual rainfall (>1,000 mm) distributed regularly throughout the year, mild winters, cool summers, and low annual thermal amplitude (<12°C) Correct answer.

Explanation

Coastal Euskadi features an Oceanic (Maritime) climate. Moderated by proximity to the Cantabrian Sea, it experiences abundant rainfall (>1,000 mm/year), low summer dry season intensity, mild winters, cool summers, and small thermal amplitude.

Question 20Physical geography and earth-surface processes

How does the climate of Rioja Alavesa in southern Álava differ significantly from the climate of the Basque coastal zone?

  1. It exhibits lower rainfall, warmer summers, colder winters, and higher thermal amplitude due to the rain-shadow effect of the Cantabrian-Basque mountains. Correct answer.
  2. It receives twice as much annual rainfall due to unobstructed oceanic air streams.
  3. It maintains constant tropical conditions with zero seasonal temperature variation.
  4. It has lower annual thermal amplitude and higher relative humidity than the coastal city of San Sebastián.

Explanation

Rioja Alavesa lies south of the Sierra de Cantabria/Toloño mountains. This mountain barrier blocks moist maritime Atlantic air, resulting in lower precipitation (~450-600 mm), hotter dry summers, colder winters, and a Continentalized Mediterranean microclimate.

Question 21Physical geography and earth-surface processes

What meteorological event occurs on the Basque coast when strong southerly winds cross the Basque Mountains, causing warm, dry air to descend rapidly into coastal valleys?

  1. The Galerna sweep
  2. The Foehn effect (locally known as the Surada wind) Correct answer.
  3. The Levante storm
  4. Sea breeze inversion

Explanation

When winds blow from the south across the Basque Mountains, air loses moisture climbing the southern slopes and heats up adiabatically as it descends the northern slopes. This Foehn effect (Surada) causes sudden temperature spikes and rapid drops in humidity along the coast.

Question 22Physical geography and earth-surface processes

What are the primary physical characteristics of the Cantabrian slope rivers in Euskadi (e.g., Nervión, Oria, Deba, Urola)?

  1. Endorheic streams terminating in interior saltwater lagoons
  2. Long courses crossing vast sedimentary plains with prolonged summer low flows (estiaje)
  3. Short length, steep gradients, high erosive power, and regular discharge due to constant oceanic precipitation Correct answer.
  4. Rivers fed strictly by summer glacier meltwater with zero winter flow

Explanation

Because the Basque Mountains lie close to the Cantabrian Sea, northern Basque rivers are short with steep bed slopes. Supported by year-round oceanic rains, their water discharge is high and regular, though subject to quick flood surges during intense downpours.

Question 23Physical geography and earth-surface processes

Which major Basque river flows southward into the Ebro basin, feeding the Ullibarri-Gamboa reservoir system that supplies drinking water to Vitoria-Gasteiz and Bilbao?

  1. Río Kadagua
  2. Río Urumea
  3. Río Bidasoa
  4. Río Zadorra Correct answer.

Explanation

The Zadorra River drains the central plain of Álava (Llanada Alavesa) southward into the Ebro. Its reservoir system (Ullibarri-Gamboa and Urrunaga) is vital for regional water supply.

Question 24Physical geography and earth-surface processes

Why are Mediterranean slope rivers in Spain (excluding the Ebro) characterized by extreme discharge irregularity and severe summer estiaje?

  1. Their basins receive erratic precipitation dominated by summer droughts and torrential autumn rains (DANA events). Correct answer.
  2. They flow exclusively through underground granite tunnels.
  3. They are frozen solid for seven months every year.
  4. Their water is entirely consumed by industrial desalination plants before reaching the sea.

Explanation

Spanish Mediterranean rivers (such as the Júcar, Segura, or Almanzora) experience long dry summer periods (estiaje) due to Mediterranean drought, interrupted by sudden violent rainfall events in autumn caused by DANA cutoff lows.

Question 25Physical geography and earth-surface processes

Which indigenous broadleaf tree species form the traditional natural deciduous woodland of the Euro-Siberian Atlantic region of Euskadi?

  1. Holm oak (Quercus ilex) and cork oak (Quercus suber)
  2. Pedunculate oak (Quercus robur) in lowlands and European beech (Fagus sylvatica) in mountain areas Correct answer.
  3. Aleppo pine (Pinus halepensis) and esparto grass
  4. Canary pine (Pinus canariensis) and wild olive

Explanation

The native vegetation of humid Atlantic Spain consists of deciduous broadleaf forests: pedunculate oak (roble carballo/cajiga) dominates lower valley floors, while European beech (haya) forms dense stands at higher mountain elevations.

Question 26Physical geography and earth-surface processes

What structural adaptation allows native Mediterranean flora (such as Quercus ilex) to survive summer drought across interior Spain?

  1. Developing giant, soft leaves that store surface rainwater like sponges
  2. Dropping all leaves in June and remaining dormant until autumn
  3. Sclerophyllous leaves (thick, leathery, small evergreen leaves with waxy coatings to minimize transpiration) Correct answer.
  4. Growing deep sub-surface root networks that absorb saltwater directly from marine estuaries

Explanation

Sclerophyllous vegetation features small, hard, leathery evergreen leaves covered in cutin wax or stomatal hairs. This design reduces water loss via evapotranspiration during prolonged dry summers.

Question 27Physical geography and earth-surface processes

In high mountain altitudinal vegetation zonation, which plant layer lies immediately above the closed mountain timberline?

  1. Deciduous oak forest
  2. Thermo-Mediterranean coastal scrubland
  3. Halophilous saltmarsh vegetation
  4. Subalpine scrub (dwarf pines, juniper, and heathlands) Correct answer.

Explanation

Above the continuous forest line (montane belt), mountain vegetation transitions to the subalpine belt, characterized by dwarf scrub, prostrate conifers (Pinus uncinata), juniper, and alpine heathlands.

Question 28Physical geography and earth-surface processes

Which soil profile is typical of humid Atlantic Spain, characterized by high organic matter content but susceptible to leaching (lixiviación)?

  1. Brown forest soil (Cambisol) and Podzols Correct answer.
  2. Terra rossa on hard limestone in arid plains
  3. Solonchak saline soils in coastal lagoons
  4. Gypsiferous aridisols of dry central depressions

Explanation

Abundant rain in Atlantic Spain drives heavy leaching of minerals down the soil profile. This generates fertile humic brown forest soils (Cambisols) under broadleaf forests, or acidic podzols under heathlands and pine plantations.

Question 29Physical geography and earth-surface processes

What type of soil development is characteristic of Mediterranean limestone regions in Spain, noted for its distinct reddish-brown clay horizon over calcareous bedrock?

  1. Gleysol
  2. Terra rossa (Rhodic Luvisol) Correct answer.
  3. Ranker soil
  4. Histosol

Explanation

Terra rossa forms from the insoluble clay residue left behind as limestone dissolves under Mediterranean climatic conditions. Its reddish hue comes from oxidized iron compounds.

Question 30Physical geography and earth-surface processes

Which environmental factors combine to make Southeastern Spain (Almería, Murcia, interior Granada) highly susceptible to desertification?

  1. Excessive continuous rainfall leaching deep forest soils
  2. Glacial meltwater surges eroding granite mountain peaks
  3. Semi-arid rainfall regimes with sporadic torrential downpours, steep eroded slopes, soft marl soils, and sparse vegetation cover Correct answer.
  4. Permafrost thawing following winter blizzards

Explanation

Southeastern Spain suffers from low annual precipitation (<300 mm), fragile clay/marl substrates, historical deforestation, and intense torrential rains. These elements drive severe soil erosion and active desertification.

Question 31Physical geography and earth-surface processes

What ecological critique is frequently directed at 20th-century monoculture timber plantations of Radiata Pine (Pinus radiata) and Eucalyptus in Euskadi?

  1. They cause tectonic instability and erode coastal flysch formations.
  2. They lead to widespread waterlogging and create impenetrable permanent swamps.
  3. They completely halt the local economic wood and paper industry.
  4. They cause soil acidification, reduce endemic biodiversity, and increase susceptibility to plant diseases and forest fires. Correct answer.

Explanation

Fast-growing non-native trees (Monterey pine and Eucalyptus) were planted widely for timber and pulp. However, monocultures lower soil pH, replace rich oak/beech biodiversity, exhaust soil nutrients, and spread forest pests.

Question 32Physical geography and earth-surface processes

Why was the Urdaibai estuary in Bizkaia declared a UNESCO Biosphere Reserve in 1984?

  1. To protect its rich mosaic of coastal saltmarshes, estuarine mudflats, and Atlantic hills, balancing nature conservation with sustainable local human activity. Correct answer.
  2. To preserve the largest deep-sea container shipping harbor in Northern Spain.
  3. To safeguard active geothermal geysers and volcanic caldera formations.
  4. To serve as an isolated military testing zone closed to all civilian economic uses.

Explanation

Urdaibai features the Oka river estuary, encompassing saltmarshes, dunes, coastal cliffs, and wooded countryside. Its UNESCO Biosphere designation aims to conserve natural habitats and migratory bird wetlands alongside sustainable forestry and agriculture.

Question 33Physical geography and earth-surface processes

Which Basque Natural Park straddles the provincial border between Álava and Bizkaia, centered around a mountain top with iconic summit pastures and broad beech forests?

  1. Pagoeta Natural Park
  2. Gorbeia Natural Park Correct answer.
  3. Izki Natural Park
  4. Peñas de Aia Natural Park

Explanation

Gorbeia Natural Park covers 20,014 hectares around Mount Gorbeia (1,481 m), protecting mountain beech forests, oak woods, karst formations, and traditional livestock pastures.

Question 34Physical geography and earth-surface processes

What major environmental infrastructure project launched in the late 1970s transformed the Nervión-Ibaizabal estuary in Bilbao from an ecologically dead industrial sewer into a clean aquatic environment?

  1. The Cantabrian Desalination Initiative
  2. The Ebro Inter-Basin Aqueduct Project
  3. The Plan Integral de Saneamiento del Bilbao Metropolitano (Consorcio de Aguas) Correct answer.
  4. The National Atlantic Forest Restoration Program

Explanation

Decades of untreated industrial effluents and urban wastewater degraded the Nervión estuary. The Plan Integral de Saneamiento built deep collector tunnels and wastewater treatment plants (such as Galindo), successfully restoring oxygen levels and aquatic life.

Question 35Physical geography and earth-surface processes

What is the primary structural objective of the Tajo-Segura water transfer (Trasvase Tajo-Segura) in Spanish national water planning?

  1. To channel urban runoff from Madrid directly into the Bay of Biscay
  2. To transport Ebro River water northward across the Pyrenees into Southern France
  3. To supply freshwater exclusively to the industrial chemical plants of Bilbao
  4. To divert surplus water from headwater reservoirs of the Atlantic-draining Tagus River to water-scarce agricultural regions in the Mediterranean Segura basin Correct answer.

Explanation

Built in the 1970s, the Tajo-Segura transfer channels water from the Entrepeñas and Buendía reservoirs on the Tagus River to the Segura basin in Murcia and Alicante, mitigating structural agricultural water deficits in the Mediterranean Southeast.

Question 36Physical geography and earth-surface processes

How does potential evapotranspiration (PET) influence the annual hydrologic balance of Southern and Interior Spain compared to Northern Euskadi?

  1. In Southern and Interior Spain, summer PET greatly exceeds precipitation, generating a severe seasonal water deficit, whereas Atlantic Euskadi maintains a positive water balance. Correct answer.
  2. PET is significantly higher along the Atlantic coast of Euskadi due to high marine atmospheric pressure.
  3. PET remains uniform across all Spanish Autonomous Communities throughout the year.
  4. PET reaches zero during Mediterranean summers due to low atmospheric solar radiation.

Explanation

Potential evapotranspiration measures atmospheric water demand. In Interior and Southern Spain, high summer temperatures and strong insolation drive PET far higher than rainfall, creating deep summer water deficits. In Euskadi, high year-round rainfall keeps the annual balance positive.

Question 37Physical geography and earth-surface processes

How is the central plateau of the Iberian Peninsula (Meseta Central) divided topographically into two distinct sub-plateaus?

  1. By the Pyrenean axial chain
  2. By the Central System (Sistema Central), which separates the North Subplateau (Duero Basin) from the South Subplateau (Tagus and Guadiana Basins) Correct answer.
  3. By the Baetic System running from west to east
  4. By the Basque Mountains dividing coastal and interior plains

Explanation

The Central System mountain chain (including Sierra de Gredos and Sierra de Guadarrama) cuts across the Meseta, dividing it into the higher North Subplateau (avg altitude 800 m) and the South Subplateau (avg altitude 600 m).

Question 38Population, cities, economic location and development

How did the Demographic Transition Model evolve historically in Spain compared to Western European countries like the UK or France?

  1. Spain never reached the post-industrial stage and maintains high birth rates above 4 children per woman.
  2. Spain underwent its demographic transition in the 18th century long before industrialization occurred in Northern Europe.
  3. Spain experienced a delayed transition, maintaining high birth and death rates until the early 20th century, followed by a rapid fall in mortality and a steep fertility decline by the late 20th century. Correct answer.
  4. Spain experienced a continuous population decline throughout the entire 19th and 20th centuries due to high emigration.

Explanation

Spain entered the demographic transition later than Northern Europe. Infant mortality dropped sharply in the early-to-mid 20th century while birth rates remained elevated (baby boom in 1960s). A rapid drop in fertility followed during the 1980s, creating an advanced post-industrial demographic profile.

Question 39Population, cities, economic location and development

What spatial pattern best describes the human population distribution across Spain?

  1. A peripheral-coastal concentration of high population density surrounding a sparsely populated interior Meseta (with the key exception of Madrid) Correct answer.
  2. An even distribution of population density across all provinces and mountain zones
  3. A heavy concentration of population in rural interior plains, while coastal cities remain uninhabited
  4. A population distribution where 90% of citizens live exclusively in the Canary and Balearic islands

Explanation

Spain's demographic spatial structure is highly unequal: high population densities are clustered along the coastal margins (Basque Country, Catalonia, Valencia, Andalusia) and island territories, plus the central capital region of Madrid, leaving the interior Meseta ('España vaciada') sparsely populated.

Question 40Population, cities, economic location and development

How is the Crude Rate of Natural Increase (Crecimiento Natural o Vegetativo) calculated in population geography?

  1. Immigration Rate minus Emigration Rate
  2. Crude Birth Rate minus Crude Death Rate (CBR - CDR) Correct answer.
  3. Total Population divided by Land Area
  4. Life Expectancy multiplied by Total Fertility Rate

Explanation

Natural increase represents population growth resulting from biological dynamics: it equals the Crude Birth Rate minus the Crude Death Rate, usually expressed per 1,000 inhabitants per year.

Question 41Population, cities, economic location and development

What visual shape characterizes a population pyramid for a society with a regressive (aging) demographic structure like Euskadi?

  1. Rectangular shape with identical width across all age cohorts from infants to nonagenarians
  2. Classic triangular shape with a broad base and rapidly narrowing peak
  3. Urn or bulb shape (narrow base indicating low birth rates, bulging center, and wide top indicating long life expectancy) Correct answer.
  4. Hourglass shape with zero population in working-age cohorts between 20 and 50 years

Explanation

A regressive population pyramid features a narrow base (low birth rates), a wide middle (working adult cohorts born during past baby booms), and a prominent apex (high life expectancy among the elderly).

Question 42Population, cities, economic location and development

What socioeconomic challenges arise when the old-age dependency ratio increases significantly in a developed region?

  1. Surplus tax revenue generated by non-working retired populations
  2. An urgent need to construct thousands of new primary schools and nurseries
  3. Immediate decrease in public spending on elderly residential facilities
  4. Increased financial pressure on public pension funds, rising healthcare costs for chronic care, and potential shortages in the active workforce Correct answer.

Explanation

As the elderly population (65+) grows relative to the working-age population (15-64), fewer active workers contribute payroll taxes to fund pensions, public healthcare, and social care services.

Question 43Population, cities, economic location and development

Which were the main destination regions for Spanish transoceanic emigration during the late 19th and early 20th centuries?

  1. Latin American nations (especially Argentina, Cuba, Uruguay, and Brazil) Correct answer.
  2. East Asian industrial cities in Japan and Korea
  3. Sub-Saharan African agricultural colonies
  4. Oceania and Pacific island territories

Explanation

Between 1880 and 1930, millions of Spaniards (particularly from Galicia, Asturias, Cantabria, the Basque Country, and the Canary Islands) emigrated across the Atlantic to Latin America, drawn by employment opportunities in Argentina, Cuba, and Uruguay.

Question 44Population, cities, economic location and development

During the intense Spanish industrialization of the 1950s–1970s, which domestic destinations received the largest waves of internal rural migrants?

  1. Deep rural mountain villages in Extremadura and Castilla-La Mancha
  2. Industrial urban regions: Catalonia, Greater Madrid, the Basque Country (Bizkaia/Gipuzkoa), and Valencia Correct answer.
  3. Agricultural dryland farms in interior Andalusia
  4. Uninhabited forest reserves in the Pyrenees

Explanation

The Spanish 'rural exodus' (éxodo rural) displaced millions of agricultural workers from agrarian regions (Andalusia, Extremadura, Castilla y León, Castilla-La Mancha) to industrial urban growth centers in Catalonia, Madrid, and Euskadi.

Question 45Population, cities, economic location and development

Since the late 1990s, how has international immigration modified Spain's demographic structure?

  1. It reduced total population density in major coastal metropolitan areas.
  2. It accelerated population aging by consisting exclusively of retirees over 80 years old.
  3. It provided a influx of young working-age adults, temporarily boosting birth rates and expanding the labor force in construction, agriculture, hospitality, and eldercare. Correct answer.
  4. It caused an immediate collapse of urban housing demand and transportation usage.

Explanation

Foreign immigration brought millions of young immigrants (from Latin America, North Africa, and Eastern Europe). This inflow cushioned domestic population aging, boosted crude birth rates, and filled low-to-medium skill labor needs.

Question 46Population, cities, economic location and development

What urban process involves the outward expansion of residential zones and commercial centers from congested inner cities into surrounding suburban municipalities?

  1. Urban desertification
  2. Rural exodus
  3. Industrial centralization
  4. Suburbanization (or peri-urbanization) Correct answer.

Explanation

Suburbanization occurs when residents and businesses relocate from dense central cities to surrounding suburban rings, encouraged by improved transport infrastructure, lower land costs, and residential preferences for detached housing.

Question 47Population, cities, economic location and development

What term is commonly used in Spanish spatial geography to describe interior provincial regions suffering from chronic depopulation, severe aging, and service closures?

  1. España vaciada (or España despoblada) Correct answer.
  2. Arco Atlántico
  3. Eje del Ebro
  4. Banana Azul

Explanation

Espana vaciada or Espana despoblada describes interior areas affected by sustained population loss, aging and reduced access to services. Rural out-migration and demographic change help explain the spatial pattern. The term is not a universal numerical density classification, and its definition does not establish a current census value for every named province.

Question 48Population, cities, economic location and development

Which model best describes the spatial organization of the Basque urban system?

  1. A monocentric model dominated exclusively by one mega-city that contains 95% of the total regional population
  2. A polycentric network anchored by three provincial capitals (Bilbao, San Sebastián, Vitoria-Gasteiz) interconnected with secondary industrial valley towns Correct answer.
  3. A linear coast-only settlement pattern with zero population or urban centers in interior valleys
  4. A random, unconnected pattern of isolated agrarian villages lacking transport connections

Explanation

The Basque urban hierarchy is polycentric (policéntrico): Greater Bilbao acts as the primary economic/metropolitan center, San Sebastián provides tertiary/tourist functions, Vitoria-Gasteiz serves as administrative capital, and medium valley towns (Eibar, Mondragón, Durango, Llodio) complete the network.

Question 49Population, cities, economic location and development

What physical feature shaped the linear, conurbated urban form of the Greater Bilbao (Gran Bilbao) metropolitan area?

  1. A series of artificial sea islands built off the coast of Getxo
  2. A vast circular ring of flat steppe terrain
  3. The steep valley corridor along the lower Ría del Nervión-Ibaizabal Correct answer.
  4. The volcanic crater basin of the Encartaciones

Explanation

Greater Bilbao grew linearly along both banks of the narrow Nervión river valley. Flanked by steep mountains, urban expansion, heavy industry, port facilities, and residential housing were forced into a dense corridor stretching toward the sea.

Question 50Population, cities, economic location and development

Which urban planning feature distinguishes Vitoria-Gasteiz from coastal Basque industrial cities?

  1. Its complete lack of public parks or environmental land-use controls
  2. Its extreme urban density hemmed in by ocean sea-cliffs
  3. Its heavy concentration of historic blast furnaces along a tidal ria
  4. Its location on a flat interior plateau (Llanada Alavesa), enabling spacious grid expansions, low urban density, and an integrated Green Belt (Anillo Verde) Correct answer.

Explanation

Vitoria-Gasteiz sits on the flat plain of Álava. This topography allowed orderly urban expansions (Ensanche and modern suburbs), spacious green avenues, and the internationally recognized 'Anillo Verde' (Green Belt) surrounding the city.