JAMB Geography Past Questions & Answers - Page 10

46.

The instrument used to measure relative humidity is called

A.

hygrometer

B.

anemometer

C.

barometer

D.

thermometer

Correct answer is A

The instrument used to measure relative humidity is called hygrometer. The hygrometer consist of wet and dry bulb thermometer placed side by side in the sterensonscreen.

47.

Which of the following is associated with savanna vegetation?

A.

shallow-rooted trees

B.

Trees that grow throughout the year

C.

dense vegetation

D.

scrub

Correct answer is D

Savannas represents the vast majority of the areas which are characterised by a layerof perenial herbaceous plants, such as sedges with varrying degree of scrubs

48.

Crater lakes are usually associated with areas

A.

that have heavy fault lines

B.

that have active volcanoes

C.

that have extinct volcanoes

D.

where subsidence has taken place

Correct answer is C

A crater lake is usually considered as a dormant volcano. They tend to have a steep-sided conical form

49.

Urban type of settlement is best described as

A.

isolated

B.

dispersed

C.

nucleated

D.

nucleated

Correct answer is B

An urban settlement is where displaced population settle within agglomeration such as a town or city. People are mainly involved in secondary and tertiary activities like manufacturing and construction. Additionally, dispersed settlement is one of the main types of settlement pattern used to classify rural settlement.

50.

Which of the following rocks is produced by the solidification of magna within the earth crust

A.

extrusive rock

B.

sedimentary rock

C.

plutonic rocks

D.

metamorphic rock

Correct answer is C

Plutonic igneous rocks (also known as intrusive igneous rocks) are rocks formed when the motten magma cools and solidifies slowly before it gets to the surface of the earth to form large crystals.