ENADE Geografia Practice Questions - ENADE Geografia - Exame Nacional de Desempenho dos Estudantes Exam - ENADE Geografia Practice Questions - ENADE Geografia - Exame Nacional de Desempenho dos Estudantes Exam

Question 1

According to Aziz Ab'Sáber's classification of Brazilian morphoclimatic domains, the 'Mares de Morros' domain corresponds to the Atlantic tropical plateau. Which set of geomorphological and morphogenetic characteristics uniquely defines this domain?

Extensive convex hills shaped by deep chemical weathering (mamelonização) on crystalline basement rocks under humid tropical conditions, with thick saprolite regolith. Tabular sedimentary plateaus bounded by steep cuestas with predominantly mechanical weathering and semi-arid pediplanation processes. Flat structural lowlands subject to permanent fluvial deposition with dense hydrophilic vegetation and seasonal sheetwash flooding regimes. Gently undulating grasslands over ancient basaltic trapps characterized by severe frost action and intense periglacial cryoturbation.

Correct Answer:

Extensive convex hills shaped by deep chemical weathering (mamelonização) on crystalline basement rocks under humid tropical conditions, with thick saprolite regolith.

Question 2

During the austral summer, the South American continent experiences significant atmospheric moisture transport known as the 'flying rivers' (rios voadores). Which atmospheric mechanism and air mass are primarily responsible for generating and directing this massive water vapor flux from the Amazon basin toward Central-Western and Southeastern Brazil?

The Maritime Tropical mass (mTa), which moves directly inland over the São Francisco basin and is topographically deflected by coastal mountain ranges. The Continental Equatorial mass (mEc), enhanced by Amazonian forest evapotranspiration and deflected southward along the eastern flank of the Andes. The Polar Atlantic mass (mPa), which pushes persistent cold frontal boundaries northwards to merge continuously with easterly trade winds across the Pantanal depression. The Continental Tropical mass (mTc), originating in the Gran Chaco depression and drawing moisture eastward via intense thermal low pressure and adiabatic compression.

Correct Answer:

The Continental Equatorial mass (mEc), enhanced by Amazonian forest evapotranspiration and deflected southward along the eastern flank of the Andes.

Question 3

In karst landscapes developed on carbonate rocks across Brazil, such as the Bambuí Group in Minas Gerais and Bahia, distinct endokarst and exokarst features develop. What fundamental chemical weathering process drives the formation of these karst landforms?

Hydrolysis of aluminosilicates by highly alkaline surface runoff, causing secondary quartz precipitation. Thermal expansion and hydration of feldspars within granitic parent rocks, generating exfoliation domes, polygonal cracking, and cavernous tafoni. Dissolution of calcium carbonate (CaCO3) by meteoric water enriched with dissolved carbon dioxide (carbonic acid, H2CO3). Oxidation of ferrous iron compounds under anaerobic conditions, producing duricrusts, hardened ferricretes, and extensive vesicular lateritic layers.

Correct Answer:

Dissolution of calcium carbonate (CaCO3) by meteoric water enriched with dissolved carbon dioxide (carbonic acid, H2CO3).

Question 4

Under the Brazilian Soil Classification System (SiBCS - Sistema Brasileiro de Classificação de Solos), Latossolos (Oxisols/Ferralsols) cover vast portions of the Brazilian Central Plateau (Cerrado). Which pedogenetic diagnostic horizon and set of physicochemical properties characterize typical Latossolos?

A shallow A humic horizon resting directly over an impermeable Bt argillic horizon with high base saturation (V > 50%), 2:1 smectite clays, and high cation exchange capacity. A B natric horizon marked by extreme prismatic structure, high exchangeable sodium percentage (ESP > 15%), and exceptionally low permeability in semi-arid depressions. An organic Histosol horizon formed under permanent water saturation with high organic carbon content, low bulk density, and negligible mineral weathering alteration. A deep, well-drained B latossólico (Bw) horizon with low cation exchange capacity, advanced desilication, and dominance of iron/aluminum oxides and kaolinite.

Correct Answer:

A deep, well-drained B latossólico (Bw) horizon with low cation exchange capacity, advanced desilication, and dominance of iron/aluminum oxides and kaolinite.

Question 5

The South Atlantic Convergence Zone (SACZ / ZCAS) is a primary driver of seasonal hydroclimatology in Brazil. How is the SACZ synoptically structured, and what is its main environmental impact during the austral summer?

A persistent, northwest-to-southeast oriented corridor of cloudiness and convective precipitation extending from Southern Amazonia to the Southeastern Atlantic coast, driving summer monsoon rains. A narrow, stationary belt of dry subsiding air positioned over the interior of the Northeast Sertão that reinforces the semi-arid rain shadow effect across the Borborema Plateau. A polar maritime cold front that stalls exclusively along the coastline of Rio Grande do Sul, inducing prolonged winter snowfall events across the high Southern basaltic plateaus. An equatorial maritime low-pressure trough anchored strictly over the Guiana Shield that completely blocks easterly trade wind convergence along the northern Brazilian coastline.

Correct Answer:

A persistent, northwest-to-southeast oriented corridor of cloudiness and convective precipitation extending from Southern Amazonia to the Southeastern Atlantic coast, driving summer monsoon rains.

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ENADE Geografia Practice Questions - ENADE Geografia - Exame Nacional de Desempenho dos Estudantes Exam

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