(a) List four modes of transportation (b) Identify... | WAEC SSCE - Geography - 2018 (Essay)

Question 1 Report

(a) List four modes of transportation

(b) Identify four constraints to inland water navigation.

Answer

(a) Four modes of transportation

(b) Four constraints to inland water navigation

Rapids, waterfalls and cataracts that interrupt navigation.
Silting and sandbanks that make rivers shallow.
Seasonal variation in water level: many rivers dry up or become too shallow in the dry season.
Floating vegetation (e.g. water hyacinth) and other obstacles blocking channels.
Sharp bends and winding courses that slow large vessels.
Rocks and submerged obstacles.

(c) Four ways the constraints can be solved

Dredging the rivers to remove silt and deepen the channel.
Building dams and locks to regulate water level and by-pass rapids and waterfalls.
Removing rocks, weeds and obstacles, and clearing floating vegetation such as water hyacinth.
Straightening and canalising winding sections and cutting canals to link rivers.
Providing navigation aids (buoys, lights) and regular maintenance of the waterway.

Answer Details

(a) Four modes of transportation

(b) Four constraints to inland water navigation

Rapids, waterfalls and cataracts that interrupt navigation.
Silting and sandbanks that make rivers shallow.
Seasonal variation in water level: many rivers dry up or become too shallow in the dry season.
Floating vegetation (e.g. water hyacinth) and other obstacles blocking channels.
Sharp bends and winding courses that slow large vessels.
Rocks and submerged obstacles.

(c) Four ways the constraints can be solved

Dredging the rivers to remove silt and deepen the channel.
Building dams and locks to regulate water level and by-pass rapids and waterfalls.
Removing rocks, weeds and obstacles, and clearing floating vegetation such as water hyacinth.
Straightening and canalising winding sections and cutting canals to link rivers.
Providing navigation aids (buoys, lights) and regular maintenance of the waterway.

(a) List four modes of transportation (b) Identify four constraints to inland water navigation. (c) In what four ways can the constraint identified in 2(a) ...