(a) Distinguish between rotation and revolution of the earth

(b) Highlight any two effects of either rotation or revolution of the earth

(c) With the aid of a suitable diagram describe an eclipse of the sun
 

(a) Describe the characteristics of each of the following rock types
(i) Granite
(ii) Limestone
(iii) Graphite

(b) Explain how each rock type is formed 
 

 Write explanatory notes on each of the following

(a) Land and sea breezes

(b) Temperature inversion

(c) Convectional rainfall 
 

Discuss the important features of Koppen's climatic classification
 

 (a) Describe the characteristics of the tropical grassland vegetation

(b) Outline the economic values of this vegetation type to the inhabitants of the region