Theory question 104
Nigeria: Physical Setting(a) Draw an outline map of Nigeria. On the map, show and name: (i) one area that receives an annual rainfall of 2,000 mm - 3,000 mm; (ii) one area noted for the Sub-equatorial climate; (iii) one important town in 4(a)(ii). (b) Identify four factors that affect the distribution of rainfall in Nigeria. (c) Outline three characteristics of the Sub-equatorial climate in Nigeria.
Show the model answer
(a) Outline of Nigeria with title, key and north arrow; a 2,000-3,000 mm belt along the south (e.g. Lagos to Port Harcourt/Calabar coastal area); the sub-equatorial belt across the south; a town in it such as Lagos, Warri, Port Harcourt, Calabar or Owerri.
(b) Latitude/distance from the sea; movement of the ITCZ and the two air masses (south-west and north-east winds); relief (e.g. Jos Plateau, eastern highlands); ocean currents; direction of the coast; vegetation.
(c) Heavy rainfall over 2,000 mm; double maxima with a short 'August break'; rain in most months, short dry season; high temperatures (about 27°C) with small annual range (2-3°C); high humidity; heavy cloud cover.
Shade the southern belt on the map.