JAMB Geography Past Questions & Answers - Page 10

46.

When weathering occurs on hill slopes, rock debris usually pile up at the bottom of the hill slope to form

A.

creep

B.

levee

C.

pebbles

D.

scrcee

Correct answer is D

Scree is a collection of broken rock fragments at the base pf a cliff or other steep rocky mass that has accumulated through periodic rockfall.

47.

The sparse population in the middle belt of West Africa can be traced to all of the following except

A.

inter-ethnic war

B.

tsetse fly infestation

C.

Arab slave trade in the North

D.

concentration of industries

Correct answer is D

Inter-ethnic war, Arab slave trade and tsetse fly infestation will lead to a decrease in population but concentration of industries would rather increase the population

48.

Soil erosion by action of rain can be caused y all the following except

A.

scanty vegetation

B.

aridity

C.

tropical rainstorms

D.

steep slopes

Correct answer is B

Aridity is a long term lack of rainfall or moisture. Soil erosion cannot take place in an srid area.

49.

Which of the following is not a plantation crop?

A.

cocoa

B.

oil palm

C.

rubber

D.

rye

Correct answer is D

Rye is not a plantation crop. Plantation crops are perennial crops that are grown on a large scale by an individual or a company.

50.

An example of a coastline of emergence is

A.

a raised beach

B.

a dalmation coast

C.

a ria coast

D.

an estuarian coast

Correct answer is A

Emergent coastlines are produced by post-glacial adjustment. These are parts of the littoral zone where a fall in sea level expose land once part of the sea bed. Examples include: Raised beach, Fossil cliff, raised stumps etc.