Geography 1990 Waec Past Questions and Answers

Question 6 :

• WAEC 1990

Which if the following minerals is most likely to be absent in a region consisting mainly of igneous and metamorphic rocks?

A. Gold
B. Coat
C. Tin
D. Copper
E. Diamond

Question 7 :

• WAEC 1990

Which of the following combinations of processes is associated with the formation of a rift valley?
(i)Tension or compression forces
(ii)Resistance and faulting
(iii)Emergence of the middle crust of rocks
(iv) Submergence of the middle crust of rocks

A. I, ii and iii only
B. I, ii and iv only
C. I, iii and iv only
D. Ii, iii and iv only
E. I and iii only

Question 8 :

• WAEC 1990

Which of the following best explains why the older fold mountains are much lower and less rugged than the newer ones?

A. The newer fold mountains are situated in areas of active earth movements
B. The effects of earth movements resulting in mountain building are much greater nowadays than they were during the period of folding
C. The newer fold mountains, in contrast to the older ones, are made up of more resistance rocks
D. The older fold mountains have been subjectd to the forces of denudation for longer, geological periods
E. Most of the newer fold mountains are situated in the interior parts of continents where they are free from constant sea erosion

Question 9 :

• WAEC 1990

All the following are characteristics of a limestone region except?

A. Stony and broken surface
B. Rugged topography
C. Adequate luxuriant vegetation cover
D. Absence of surface drainage
E. Depression of varying sizes an d depths

Question 10 :

• WAEC 1990

The presence of gorges in the upper section of rivers is due to the fact that?

A. The rocks in the upper course are less resistant
B. The volume of the river is small
C. Hanging valleys join the main valley as waterfalls to cause the gorges
D. The upper course has has a steep gradient
E. The water contains chemicals which dissolve the rocks