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Geography

Geography Topics

Undergraduate level — Geography

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quiz Questions

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Q71

What physical parameter dictates whether an alluvial river channel will exhibit a meandering or braided pattern, according to Lane’s Balance relation?

1 · 2 marks · MCQ

A.

The low ratio of clay to gravel in the suspended load

B.

High sediment load combined with a steep channel gradient

C.

Deep laminar fluid flows within cohesive channel banks

D.

Low stream power under highly consolidated bedrock

Explanation

Braided streams develop under high sediment supply rates and steep stream slopes, combined with loose, easily erodible channel banks.

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Q72

Which type of micro-fault configuration describes a low-angle thrust fault where the overriding block travels massive horizontal distances over tens of kilometers?

1 · 2 marks · MCQ

A.

Strike-slip pull-apart fault

B.

Nappe structure

C.

Listric normal fault

D.

Reverse strike fault

Explanation

A nappe is a sheet-like body of rock that has been moved more than 2 km from its original position by thrust faulting or recumbent folding.

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Q73

What type of eolian sand dune exhibits a crescent shape with the horns pointing downwind, developing in areas with a unidirectional wind field and a limited sand supply?

1 · 2 marks · MCQ

A.

Parabolic dune

B.

Barchan dune

C.

Seif dune

D.

Star dune

Explanation

Barchan dunes are crescent-shaped dunes whose tips point downwind, forming under restricted sand volumes and stable wind directions.

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Q74

Which marine geomorphic feature represents a flat-topped submerged volcanic seamount that has undergone wave-cut planation and subsequent thermal subsidence?

1 · 2 marks · MCQ

A.

Abyssal hill

B.

Guyot

C.

Mid-oceanic knoll

D.

Submarine canyon head

Explanation

Guyots are flat-topped seamounts that were once above sea level, eroded flat by wave action, and submerged due to seafloor spreading cooling.

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Q75

What geomorphic index is calculated by comparing the actual channel length along its thalweg to the straight-line valley length to classify channel patterns?

1 · 2 marks · MCQ

A.

Bifurcation ratio

B.

Sinuosity index

C.

Hypsometric integral

D.

Drainage density value

Explanation

Sinuosity is the ratio of channel length to straight-line valley length. A value greater than 1.5 generally denotes a meandering river.

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Q76

Which subaerial process drives the chemical weathering of potassium feldspars into kaolinite clay minerals under weakly acidic meteoric water conditions?

1 · 2 marks · MCQ

A.

Carbonation leaching

B.

Hydrolysis

C.

Hydration crystallization

D.

Chelation bonding

Explanation

Hydrolysis involves a chemical reaction between H+ ions in water and mineral ions, replacing cations in feldspar to form kaolinite clay.

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Q77

What specific term describes a valley whose course was established on a younger overlying geological stratum that has since been entirely eroded, forcing the stream to cut blindly across ancient underlying structures?

1 · 2 marks · MCQ

A.

Antecedent valley

B.

Superimposed valley

C.

Consequent stream channel

D.

Subsequent strike stream

Explanation

A superimposed drainage pattern develops on younger covering strata that are subsequently stripped away by erosion, exposing discordant rock structures beneath.

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Q78

Which marine shoreline feature is a linear depositional ridge of sand that connects an offshore island directly to the mainland shore?

1 · 2 marks · MCQ

A.

Spit

B.

Tombolo

C.

Barrier beach

D.

Baymouth bar

Explanation

A tombolo is a sand deposition bar or spit that links an offshore island to the adjacent mainland coast.

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Q79

According to Plate Tectonics theory, what morpho-tectonic phase of the Wilson Cycle is represented by the modern Red Sea?

1 · 2 marks · MCQ

A.

Embryonic rift valley phase

B.

Juvenile ocean basin phase

C.

Mature ocean basin phase

D.

Terminal geosynclinal phase

Explanation

The Red Sea represents the juvenile or narrow sea stage of the Wilson Cycle, where continental rifting has transitioned into initial seafloor spreading.

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Q80

Which structural parameter describes the geometric intersection line between a tilted fault or bedding plane and a horizontal reference plane?

1 · 2 marks · MCQ

A.

Dip angle

B.

Strike line

C.

Hade angle

D.

Plunge bearing

Explanation

The strike of a geologic feature is the compass orientation of a horizontal line drawn on its dipping plane surface. Dip is perpendicular to strike.