Waec Geography 1990 Past Questions and Answers

Question 21:

• WAEC 1990

Which of the following combinations can be regarded as sub-systems within the ecosystem?

A. Food chain, hydrological cycle, mineral nutrient cycle
B. Hydrogical cycle, mineral nutrient cycle, evironmental controls
C. Mineral nutrient cycle, hygrological cycle, ecosystem controls
D. Ecosystem controls, food chain, hydrological cycle
E. Food chain, ecosystem controls, environmental controls

Question 22:

• WAEC 1990

Loss of farmland can be contributed to all the following except?

A. Sedimentation
B. Leaching
C. Desertification
D. Sheet erosion
E. Over-grazing

Question 23:

• WAEC 1990

The term gauge in railway transport refers to the?

A. Weight of vehicle that rails can bear
B. Measurement of gradient along the side slopes of the rails
C. Length of the rails in a country
D. Distance between rails of a track
E. Amount of rainfall experienced along the rails

Question 24:

• WAEC 1990

(a) State three reasons to show that the earth is spherical
(b) Describe three effects of the revolution of the earth
(c) Calculate the noon altitude of the sun at the Tropic of Capricorn on June 21

Question 25:

• WAEC 1990

(a) What are the similarities and differences between the lines of latitude and longitude?
(b) An international cricket match between The Gambia and India is scheduled to start in Banjul (longitude 16°W) at 9.00a.m local time on 26th June. Calculate the time and day that listeners will have to tune to their radios for the start of the commentary at (i) Bombay (74°E) (ii) Pittsburg (89°W).