(a) On an outline map of Nigeria, locate and name (i) the Jos Plateau and Idanre hills; (ii) the Rivers Ogun, Cross anc Hadeija; (iii) Lakes Chad and Kainji...

(a) Outline map of Nigeria: relief and drainage features

• (i) Jos Plateau - central Nigeria; Idanre Hills - south-west (near Akure).
• (ii) River Ogun - flows south-west into the Lagos lagoon; River Cross - south-east, into the Atlantic near Calabar; River Hadejia - north-east, draining toward the Lake Chad basin.
• (iii) Lake Chad - far north-east corner; Lake Kainji (artificial) - west-central, on the River Niger.
• (iv) Niger Delta - fan of creeks and swamps where the Niger reaches the sea in the south-south.

Show rivers as lines with arrows toward their mouths, lakes as shaded patches, and highlands by shading; add a key.

(b)(i) Four physical features of the Niger Delta

• Low, flat and swampy land lying near sea level.
• Network of distributaries and creeks as the Niger splits before entering the sea.
• Mangrove and freshwater swamp forest with muddy, waterlogged soils.
• Sand bars, beach ridges and lagoons along the seaward edge, deposited by the river and the sea.

(b)(ii) Four physical features of the North Central Plateau (Jos Plateau)

• High, upland surface rising above the surrounding plains (around 1200-1800 m).
• Cool climate because of the altitude, cooler than the lowlands around it.
• Volcanic hills, cones and older granite rocks giving a rugged surface.
• Source of many rivers (a water divide) with steep edges/escarpments and tin-bearing rocks.