(a) What is a lake? (b) Describe the formation of lakes by wind erosion. (c) identify three benefits of lakes to man.
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
Correct Answer: Option
Explanation:
(a) Meaning of a lake: A body of water, accumulated in a depression or basin and surrounded by land
(b) Formation of lakes by wind erosion:- Occurs mainly in the arid regions - rocks deeply weathered - loose non-consolidated soil runs deep below surface no wind breaks - wind speed is high - winds have strong erosive power - wind deflation sets in - continuous action of wind deflation creates a hollow - eddy action of the wind further widens and deepens the depression/hollow - water table is reached-deflation ceases when the water table is reached water seeps out to form a lake - lake is usually small and shallow-excessive evaporation makes the water salty - e.g. Quattara Depression in Egypt, Great Basin of Utah, USA
(C) Benefits of lakes to man: - means of transportation- source of fish - source of common salt-source of water for reared animals - regulates flow of rivers - attracts settlements in arid and semi - arid regions - reserves water for HEP generation - source of domestic water supply - tourist attraction sports and recreation - health resort - moderation of climate - for employment - for irrigation water for industrial purposes - centres for aquatic research.
(a) Meaning of a lake: A body of water, accumulated in a depression or basin and surrounded by land
(b) Formation of lakes by wind erosion:- Occurs mainly in the arid regions - rocks deeply weathered - loose non-consolidated soil runs deep below surface no wind breaks - wind speed is high - winds have strong erosive power - wind deflation sets in - continuous action of wind deflation creates a hollow - eddy action of the wind further widens and deepens the depression/hollow - water table is reached-deflation ceases when the water table is reached water seeps out to form a lake - lake is usually small and shallow-excessive evaporation makes the water salty - e.g. Quattara Depression in Egypt, Great Basin of Utah, USA
(C) Benefits of lakes to man: - means of transportation- source of fish - source of common salt-source of water for reared animals - regulates flow of rivers - attracts settlements in arid and semi - arid regions - reserves water for HEP generation - source of domestic water supply - tourist attraction sports and recreation - health resort - moderation of climate - for employment - for irrigation water for industrial purposes - centres for aquatic research.