Which of the following methods of representing statistical data would be most suitable for showing annual production of rice on a month-to-month basis?

A. Line graph

B. Pie chart

C. Bar graph

D. Flow chart

Which of the following types of bar graphs shows increases and decreases compared with a given average?

A. Divided bar graph

B. Group bar graph

C. Divergent bar graph

D. Percentage bar graph

Simple bar graphs can most suitably be used to represent all the following except

A. Value of a country's leading exports and imports

B. distribution of population in a country

C. month by month rainfall records of towns

D. values of various foodstuffs produced in a country

The temperature of the environment changes with

A. erosion

B. altitude

C. mass wasting

D. longitude

The degree of longitude through which the Earth spins within 3hours is

A. 15°

B. 30°

C. 45°

D. 60°

An example of physical weathering process is

A. carbonation

B. exfoliation

C. hydration

D. hydrolysis

Which of the following rocks is sedimentary?

A. Coal

B. Gneiss

C. Granite

D. Marble

Granitic rocks contain

A. silica and aluminium

B. silica and iron

C. magnesium and copper

D. copper and bauxite

Chemical weathering can take place most effectively when the conditions are

A. cold and dry

B. hot and wet

C. cold and wet

D. hot and dry

The temperature at the foot of a mountain is 20°C. If the mountain is 6,000 metres above sea level, what will be the approximate temperature at the top of the mountain?

A. - 19.0°C

B. -16.0°C

C. 14.0°C

D. 19.0°C