When a plateau is enclosed by fold mountains it is alled

• A. a volcanic plateau
• B. a tectonic pleteau
• C. an intermont pleteau
• D. a dissected pleteau

A stalagmite differs from a stalactite in that a stalagmite

• A. is thinner and longer than a stalactite
• B. starts from the roof of a cave
• C. is evaporated calcium carbonate
• D. starts from the floor of a cave

Which of the following factors account for the traffic on Africa rivers? 1. Availability of cheaper means of transport 2. Seasonal fluctuations of river flow. 3. Pressure of water falls and rapids. 4. Rivers flowing through sparsely populated areas.

• A. 1 and 2
• B. 2 and 3
• C. 1 and 4
• D. 3 and 4

The most serious cause of desertification in Nigeria is?

• A. excessively high temperature
• B. excessive pressure on land
• C. extremely low rainfall
• D. environmental pollution

The steep-sided flat-floored valley in hot deserts through which occasional flash floods flow is known as

• A. bajada
• B. headland
• C. playa
• D. wadi

The highest peak in Nigeria can be found on the?

• A. Oban Hills
• B. Western Uplands
• C. Adamawa Highland
• D. Jos Plateau

(a) (i) Draw an annotated cross profile from point A to point B.

(ii) Are points A and B intervisible? (Give one reason for your answer)

(b) In what three ways has the relief affected the transportation network of the mapped area?

(c) Give any two reasons why the area mapped is sparcely populated.

----------is the largest river in Nigeria

• A. River Niger
• B. River Benue
• C. River Ogun
• D. River Osun

The temperature reading at the peak of a volcano is 6ºC. What will be the temperature at the foot of the volcano which is 3000 metres from the surrounding low land?

• A. 5.5°C
• B. 13.5°C
• C. 13.5°C
• D. 25.5°C

Thermal electricity is produced in all the following areas except

• A. Afam
• B. Oji
• C. Kainji
• D. Sapele