JAMB Geography Past Questions & Answers - Page 34

166.

What is the process of lowering and leveling of the earth surface by gradual breaking and wearing away of such earth's surfaces?

A.

Weathering

B.

Denudation

C.

Relief

D.

Mass wasting

Correct answer is B

Dendation involves breaking of the earth's surface hence levelling such surface through agents such as water, wind etc.

167.

________is the failure of the end point of a closed traverse to fall exactly on the point of origin of the transverse?

A.

Error of compass

B.

Traverse error

C.

Error of closure

D.

Field error

Correct answer is C

Error of closure is the failure of the end point of a closed traverse to fall exactly on the point of origin of the transverse.

This error can only be known when the field details are plotted

168.

One of the following surveying instruments is used to set out lines at right angles to the main chain line?

A.

Optical square

B.

Station pegs

C.

Offset staff

D.

Steel Band

Correct answer is A

Using either the mirror method or the prism square method, the optical square is used to mark out lines at right angles to the main chain line.

169.

One of the following is not a problem involved in harnessing solar energy?

A.

Poor technological know-how

B.

Adequacy of capital

C.

Unreliability

D.

Fear of competition with established energy sources

Correct answer is B

High cost of harnessing solar energy is a problem while adequacy of capital isn't

170.

Which of the following is a problem of landlocked countries?

A.

Security of goods

B.

Political stability

C.

Low freight cost

D.

Political dependence

Correct answer is D

No explanation has been provided for this answer.