The greatest hydro-electric power potential in Nigeria is found in the

• A. Sokoto plains
• B. Niger-Benue trough
• C. Cross River Basin
• D. Chad Basin

Urban centers originate mainly as zones of?

• A. transport concentration
• B. greater social intercourse
• C. tourist attraction
• D. non-primary economic activity

A basin where rock layers have been folded and in which permeable rock which has trapped water is sandwiched between impermeable layers is referred to as

• A. drainage basin
• B. river basin
• C. water basin
• D. artesian basin

Which of these sets of rivers enter the sea through estuaries?

• A. The Thames, Zaire and Plate
• B. The Plate, Ganges and Columbia
• C. The Nile, Rhine and st. Lawrence
• D. The Zarie, Thames and Niger

The stratification of sedimentary rocks is mainly caused by?

• A. lateral pressure being applied from two sides
• B. deposition of rocks particles in layers
• C. the sorting action of the wind
• D. wave action and longshore drift

On a topographical map, a number of inverted-V contours pointing up slope up slope indicate a?

• A. valley
• B. ridge
• C. saddle
• D. spur

The likely harzards to shipping at the North American end of the North Atlantic sea route are

• A. waterfalls and rapids
• B. fog and iceberg
• C. submarine ridges and trenches
• D. shallow inlets and weeds

Which of the following statements is not correct?

• A. Igneous rocks are formed by the cooling and solidification of magma
• B. maga is erupted from the interior of the earth
• C. when magma solidifies on the surface of the earth it is called intrusive rock
• D. magma does not occur in layers

Which of the following ocean currents enhances rainfall in its immediate hinterland?

• A. canaries current
• B. mozambique current
• C. california current
• D. west Australian current

The energy received from the sun at a particular place is called

• A. insolation
• B. convection
• C. conduction
• D. heat wave